Hello, I think I have the answer. You go into My Computer and then go to uninstall/change a program in Windows 7/Vista. Xp would be in the Control Panel. Then you scroll down the list until you see the follwing entry: "Netbits Contextual Tracking". Click on it then click on the uninstall/ change button. This should remove those pesky ads from popping up.

Bo62010, thank you very much for the tip. I did as you suggested and there it was, the sneaky little bugger. sometimes it is hard to see the woods for the trees. thank you yet again... love light and peace shine on you, stay safe.

Unfortunately this "little bugger" may still be in your system even though you uninstalled it, and may be waiting on a timer to reactivate when you least expect it. When I found this file and tried to uninstall it, I was luck to have been running the free version of ThreatFire. Because it picks up new threats based on behavior rather than virus definitions, it was able to catch the fact that this program tried to replicate itself as soon as I attempted to uninstall it. Had I not been running ThreatFire, it would probably have replicated, and still be on my system. I don't know how this program is getting onto computers, but it seems to be eluding all conventional anti virus or spyware software, and seems very determined to stay put once installed. Beware of this!