[Tigga]

Does anyone have any suggestions/tips/advice/whatever to help me find and remove a pop-up ad generator from my computer? I have no idea how this thing got on my computer (though I suspect my girlfriend accidentally downloaded it), but it's about to drive me crazy. I'm positive there's some kind of program on my computer since the banners pop up when I'm not even browsing. I've tried looking through the processes that are running and ending just about every one of them, but nothing seems to work. I think I did manage to find one or two since I removed a couple of programs and they seem to be popping up less often, but I've still got one on here somewhere... Does anyone have any advice on how I could find this last one an remove it??? ANY help would be MUCH appreciated.