If you go to the proper part of the forum, it will tell you, the new Avast only runs on XP SP2
Not true at all. Avast will work with Windows 9x, ME and all NT based systems.
http://www.avast.com/eng/system_requirements2.htmlBreeze,
setup the mail as if Avast isn't there, than run the Mail Protection Wizzard. Avast needs to make those changes or it will not be able to scan mail. Make sure the entries in avast4.ini under the mail section are restored to default before doing this. (See
Technical's Settings)