yeah probably its in your pc's registry entry. try this softwares: bazooka spyware remover and ad-aware by lavasoft. it helps me a lot. you can have free downloads @
www.download.com
i used both softwares coz sometimes, even though the adaware remove it some of it are still there. so i use bazooka to remove it manually. the procedures for removing the spyware manually is @ this site:
www.kephyr.com you might wanna check it out.. hope that this one helped tc
