You didn't say if these were local user names or AIM user names you want Hal to remember. If it's local users, just set it in the options menu, where you set the Hal name. In the signon screen for the Hal AIM bot, there's an options button that will let you specify how Hal responds to warners, but it doesn't give you the option to warn others for bad language, etc. If the user names you mean are AIM users, I know Hal knows them by screen name. I'm not sure if you can get him to substitute other names for screen names when identifying them. Probably depends on his mood at the time, lol.