Can't receive/send mails - Error 80090330

Trying to use Time & Chaos/!ntellect mail module in Vista Ultimate (it
was working fawlessly in XP). Set up is identical as Windows Mail (and
Outlook Express). However, onw, in Vista, I cannot reseive/sent mails.
Checking account shows me an error: "Failed authentication - Error
80090330". I tried AT&T support - they are not familiar with this
program; chekhed/unabled anti spy or whatever else I had anti (also -
ZoneAlarm is green). Searching Interned I founded a few mentions about
similar (80090330) error but in other situations and, what I
understand, related to authentication. I'm new (and still ignort) to
Vista. May be someone have some idea what to do?
Marek Kalisz