Ok. So I am infected. It is just this one ad for "Deep Registery Cleaning" junk. Spybot can't get it because it says the file is in use. So I go to Safe Mode and delete the file which is C:Program Files/ISTsvc and delete that folder. However, when I log back in and re-boot it not there, Open IE and surf and it suddenly is back! How do I kill this rat bast@rd?

Thanks.