Here's how to dupe an item without any hacking:
-----------------------------------------------

Use Town portal.
Set any item in front of the portal.
Click with the mouse on the item and step through the portal.
When you reach the town the item will be in your inventory.
Go back through the portal and the item will be where you
left it. To duplicate an item in multiplayer:

Fill up your belt with healing or mana potions.
Drop any item on the ground.
Walk some distance away.
Click back on the item. Your character will start walking
toward the item.
Just before the character picks it back up, click on a potion
that you should have on your belt.
If the item is picked up, you can then drop the potion.
When the potion hits the ground it will change into the item
that you pick up. If the potion doesn't change when it hits the
ground, you clicked on it to late.

Repeat 1 through 6, but try walking farther away from the item.
It might take a few tries to get your timing down, but it will
happen.
Also, you can not have more than one of the same item on the
ground at any one time.
If you try, the screen will say "duped item detected," and it will
remove one of them.  


Diablo 2 in a Window:
---------------------
Although not documented, you may run Diablo 2 in a Window
instead of full-screen. Simply add "-w" to your Diablo 2
shortcut. (ie: "C:\Diablo 2\Diablo II.exe" -w)

Retrieving Items from Dead Corpse:
----------------------------------
(Tested with version 1.01)
When you die and are transported back into town, shutdown
the game incorrectly (example: [Alt] + [Tab] back to Windows,
press [Ctrl] + [Alt] + [Delete] and shutdown the Diablo 2 task).
When you load the game back up again, your dead corpse will
appear in town and you may collect your items/gold.

Savings & Load:
---------------
Unlike in Diablo I, you cannot save the game in the
middle of a dungeon, and re-load the game back to that
point.  That is, if you pick up an unidentified magic
item and want to save the game before you identify it,
so that you can reload the game and dump the item if
its actually cursed or useless, you cannot do it directly
through the main game menu like you could in Diablo I. 
This is because your in-game menu options are various
game setting 'Options', 'Save and Quit', and 'Return to
Game'.  To do this in Diablo I you would just: save,
identify item, load game, and then dump the item if you
wanted.  To do this in Diablo II, you need to: save and
quit, load game, identify item, Alt-Tab (to bring up your
Windows desktop), end task Diablo II (ctrl-alt-del, select
Diablo II, click on 'end task'), then relaunch the game,
and reload the game.  Your item now returns to an
unidentified state, and you can unload (sell, drop) it
if you want.

Money:
------
This doesn't work for any class except the Barbarian.
It definitely takes patience. OK, first learn the find
potion skill. If u want to, after go to the skills shrine,
then go around and kill everything, in between use the find
potion skill and with the shrine enhancement u should be able
to get light health and mana, and maybe even a rejuvenation.
when your full go to the blacksmith and sell your potions.
Presto, Mo money!

Hex Cheat (Stash)
-----------------
WARNING: Always make a backup of your savegame before
edititng!

To modify the amount of gold contained in your "Stash",
do the following:

1) Try to put at least 1000 gold in your stash. This cheat
will work with smaller amounts, but you may be limited on
how much you can add.

2) Load your game. Record the amount of gold in your stash.
Exit from game.

3) Load a Hex Editor and convert your gold to HEX. Open the
file savegame.d2s (savegame will be the name of your character)
in your Diablo 2 save folder.

4) Search for the HEX location (from converted amount of gold).
Modify the HEX location to FFFF (or any amount in HEX that you
wish - up to 65000). Save the file.

5) Re-load your Diablo 2 savegame and you will have 65000 in
your stash!

Gain money and items quickly:
-----------------------------
Travel past the Blood Moor and look for a cave. The
cave has two levels, with a golden chest somewhere
at the second level. Inside are usually health potions,
mana potions, scrolls of town portal or identify,
unidentified weapons and armor, and sometimes even a
rare item that can be sold for a great deal of money.
If you identify the item and it is something that you
do not want, sell it. Save and exit the game. The next
time the game is loaded, the chest will still be there
with different items. This can be done as many times as
needed.

Cow level:
----------
When you have the Horadaric Cube, obtain "Wert's Leg"
in Tristram (where you go to rescue Deckhard Cain).
Go to the northwest part of the town and search the
boy's body. Place both Wert's leg and a Tome of Town
Portal in the Horadaric Cube, and it will open a portal
to a hidden level filled with axe carrying cows. Do not
go through the portal until you are over level 35 because
the cows are quite numerous and strong.

Duplicating items:
------------------
Note: This only works on Open Battlenet, as the characters
need to be saved on your computer. This trick also requires
two computers with two copies of Diablo 2. Get the items to
be duplicated. Copy the "Save" folder from the Diablo 2
folder of that computer and paste it on your desktop.
Go online with both computers and meet in a game. Give the
items to be duplicated to the second computer, then save and
exit. Press [Alt] + Tab] on the first computer to switch to
Windows and copy the "Save" folder from your desktop back to
its original location, overwriting its current contents.
Return and join the other computer in the game. You will
now have all your original items and the other computer will
have a copy of them. Note: This does not work with the +1 Skill
book from Act 2, as you are only allowed to do it once.

Can't get your Dead body?:
--------------------------
Just save, exit and go back to the game. Your body
will be in the town.

Avoid no-win situation:
-----------------------
Press [Esc] when facing imminent death, then save and
exit the game. Load the game again to start in town,
where you can buy weapons, life etc.

Change enemies:
---------------
If enemies in a certain area, such as Hell, are too tough
restart the game. Enemies such as Flesh Spawners, Stygian
Hags, and the Hell beetles can spawn dozens of creatures in
seconds. After restarting, check the area and repeat if
needed. The Hell beetles are usually replaced by Doom Knights
and Venom Lords, and the Hags are usually replaced by the same.
This may also work with other areas.

Imbue without worry:
--------------------
When you get an item and want to imbue and are worried about
the outcome, copy the "Save" folder from the Diablo 2 folder
to the desktop or any other location. Start your game and imbue.
If you do not like what happened, save the game and exit.
You will now be in main menu again. Press [Alt] + [Tab] and
copy the save folder back to its original location. Then click
"Single Player Game" and start. You have another chance to imbue
the item. Repeat this until you get the desired effect.

Unlimited one way portal:
-------------------------
Cast a Town Portal from a safe location, then take the portal
into town. Use the waypoint system and run to get back to your
last location. This allows you to use the portal to go back into
town an unlimited number of times as long as you do not use it
from town to return to where you were previously.

Using items in Act 1 for Necromancers:
--------------------------------------
Because gems in the beginning of the game are usually
more precious than any unique/rare item you may find,
get a socketed bardiche and fill it with chipped or
flawed rubies or sapphires. For boots and gloves, try
to go for + to gold from enemies because gold in Act 1
will allow you to buy useful items in Act 2. For rings
and amulets, lean towards + to life Mana or Attack ratings.
For armor and helm, try to get the best defense. However
if you find something that has kicking abilities, do not
hesitate to sacrifice the few defense points in difference.
For belts, the more slots the better. In skills, + to strength.
In abilities, +2 raise skeleton, +1 to amp damage, +2 to clay
golem, + 1-2 to bone armor.

Unlimited imbued items:
-----------------------
After installing v1.00, play until Charsi offers to imbue
something for you. Save and exit the game. Then download
patch v1.03 and install it. Join a TCP/IP or open Battle.net
game with the same character. Imbue something, then give it
to a trusted player. After exiting, return as the same
character, and you will be able to imbue again. Note: v1.00
save files cannot be overwritten by v1.03.

Hints:
------
Before selling an item, repair it. This will increase its
value.

Always have several Town of Portal spells ready.
These portals can provide a quick escape if the dung
hits the fan and there's no other way out.

You can use the waypoints to move between the different
acts. This is helpful if you want to go back and buy an
item or get something repaired.

Horadric Cube formulas:
-----------------------
NOTE: These formulas will not work with patch 1.02
installed.

The Horadric Cube, found in Act 2, works as a kind of magical
catalyst.
If you put certain items into the Cube, it will transform them
into another item. Here are a few formulas that work:

2 quivers of Arrows = 1 quiver of Bolts
2 quivers of Bolts = 1 quiver of Arrows
1 quiver of Arrows + 1 Spear = 1 bundle of Javelins
3 Perfect Gems + Magical Item (armor, weapon, jewelry) = random
  high level item
2 Topaz + 1 Ring = 1 Coral Ring (lightning resistance)
3 Mana Potions + 3 Heal Potions = 1 Rejuvenation Potion
3 Gems of same grade and type = 1 higher-graded Gem of same type
3 Rings = 1 Amulet
3 Amulets = 1 Ring

  
Recipes for the Horadric Cube:
------------------------------
Ingredients: Wirts Leg, Tome of Town Portal
Result: Red Portal to Secret Cow Level
Special Note: Must finish the game first and be in the
Rogue encampment on the same level as when you finished

Ingredients: Amulet, 1 Perfect Gem of each type except Skull
Result: Prismatic Amulet - 18-24% Resist All
Special Note: -

Ingredients: 3 Perfect Gems: same type, 1 Magical Item
Result: 1 Random Magical Item
Special Note: Works with Magical Armor, Weapons or Jewelry

Ingredients: 3 Gems: same type and quality
Result: 1 Gem of next higher quality
Special Note: 3 Perfect Gems will not transmute

Ingredients: 1 Ring, 2 Topaz gems
Result: 1 Coral Ring
Special Note: Ring gives +21-30 lightning resistance;
quality of gems and ring properties do not matter

Ingredients: 1 Ring, 1 Sapphire, 4 Thawing potions
Result: 1 Cobalt Ring
Special Note: Ring gives +21-30 Cold resistance; Quality
of gem and ring properties do not matter

Ingredients: 1 Ring, 1 Ruby, 4 Exploding potions
Result: 1 Garnet Ring
Special Note: Ring gives +21-30 Fire resistance; Quality
of gem and ring do not matter

Ingredients: 1 Ring, 1 Emerald, 4 Antidote potions
Result: 1 Viridian Ring
Special Note: Ring gives +21-30 Poison resistance; Quality
of gem and ring do not matter

Ingredients: 3 Rings
Result: 1 Amulet
Special Note: -

Ingredients: 3 Amulets
Result: 1 Ring
Special Note: -

Ingredients: 3 Healing Potions, 3 Mana Potions, 1 Gem
Result: 1 Full Rejuvenation Potion
Special Note: Gem quality does not matter; quality of
potions does not matter

Ingredients: 6 Gems: any type or quality, 1 Sword
Result: 1 Socketed Longsword
Special Note: -

Ingredients: 3 Healing Potions, 3 Mana Potions
Result: 1 Rejuvenation Potion
Special Note: Quality of potions does not matter

Ingredients: 1 Healing Potion, 1 Strangling Gas Potion
Result: 1 Antidote Potion
Special Note: Quality of Healing Potion does not matter

Ingredients: 1 Quiver of arrows, 1 Spear
Result: 1 Set of Javelins
Special Note: -

Ingredients: 2 Quivers of Arrows
Result: 1 Quiver of Bolts
Special Note: -

Ingredients: 2 Quivers of Bolts
Result: 1 Quiver of Arrows
Special Note: -

Ingredients: 1 Dagger, 1 Axe, 1 Stack of Throwing Knives
Result: 1 Stack of Throwing Axes
Special Note: Axe/Dagger class and properties do not matter

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