It's not MY computer this time, it's HIS. He is running XP/Windows and this ANNOYING balloon keeps popping up from the bottom task bar, right. It will NOT delete, even a right click just OPENS a window on IE (Firefox is the default) and I can't get RID of it!

It appears to be some site called antispyware.com, which I see is a spyware prog/site itsself, but it also seems to be attached to Windows Defender which is MSN's AV prog.

He HAS Avast! and just ran it...NO threats/infections found.

How can I get RID of this damn thing?
I have looked in Programs, Add/Remove, and it's NOT there! The antispyware.com is INSISTING on taking the computer to their site, and wants a minimum of $50! Heellllppppp!