What is the CD key for warcraft 3 the reign of chaos?

One way is to uninstall Warcraft 3 and use another set of codes when reinstalling it. If you have a second set of CD keys, one can download a special program to change your keys without uninstalling. This can be risky due to the possibility of the program stealing your CD keys or giving you a virus. If you need new keys, they can be bought from Blizzard.