I know I have been spamming alot for just a being a newbie. But I really had a question to ask, I'm sorry for all the spamming.

Anyway, I had successful got 0x000 from packet 51. But I have a question. I know if the result 0x201 is cd key in use packet which is appended with a string (name of the user). But how and where can I know which cd key he is using if I provide 2 cd keys? e.g. Frozen Throne or Reign of Chaos?

For warcraft 3 Frozen throne, you will get 0x211 (int value 529) and a string appended behind with the cd key user's name. I just done some testing and found out. Maybe the moderator can record down :) could be useful. its the return of 0x51 from server

This is already documented in Bnetdocs.

[Kp edit: fixed Myndfyre's tag.  [urk] is not a valid forum code. :)]