SOJ

[Roland]

actualy there are a lot of programs for making dupes, an example: Jamell; another example: Shadowmaster, you want another?, just visit "frozenkeep", it's a link from the sevenlances.com (I don't remember the name).

First of all, discussing how to make dupes, abuse bugs, or in any way cheat is a sure fire way to get yourself flamed the hell out of here and/or banned.
Second of all, The Phrozen Keep does not endorse cheating, hacking or anything of that nature in any way, particularly in regards to the Realms. They are a modding community, and a very valuable commodity to D2 and the D2 community as a whole.
Third of all, those are not duping programs. They are trainers. They are designed to allow you to alter your characters stats, items, skills, etc. They are great for testing things in D2, particularly in mods, but also for just cheating your way blindly through the game. In addition, they ONLY work in Single Player / TCP/IP / Open Battle.Net. They do NOT work on the Realms.
And finally, there are much easier ways to dupe than using a third-party program. The ability has been around since the "save state" was first introduced into gaming. But, again, this SOLELY affects SP, TCP/IP, and Open Battle.Net. It does not work on the Realms.

Before spouting off on ways to dupe, and talking about a site that supposedly teaches you how, you might want to research the issue a bit. It'll save you alot of face.