Obtaining or changing the WatchBot password
To obtain, or change, your WatchBot password, login to FICS, and issue the following command there:
tell WatchBot password yourPassword
Of course substitute yourPassword with the actual password you want to use.
If you use BabasChess remember to issue this command in the Console window, not in one of the chat windows. Pressing F2 once or twice should bring the console window to the top.