Datagg-
Sorry for your luck.I hope it doesn’t happen to me too!
I use WinPatrol ( bob’s suggestion) Spyware guard and blaster,Spybot resident+Script defender.
Also I use some on demand scanners,Ad-Aware,Bazooka,HijackThis,Swat-it,CrapCleaner
+xp-Anti-Spy.
I hope you have better luck with this install
-max