run hijackthis! post on hijackthis.de and then remove entries that look bad. try ewido.net online scanner. if you still have problems post hijackthis log here.
of those online scanners which ones actually remove infections? I know norton's just scans, and does give option for removal unless they added a feature to for removal. by the sounds of it panda does the same, & the last time I tried kaspersky's online it also wanted me to install the trial ware.