Oh, I have already installed spybot, but I still can't remove four items that just won't go away. I'll have to do some more detective work to get rid of them, lol! I also have to re-install and run MacAfee to see if that helps.
Two other things to consider:
1. Have you tried ad-aware? It is free, too, and it catches some things that spybot does not. (And spybot catches some things that ad-aware does not, so it is good to have both).
2. Are you deleting them, only to find that they immediately return again? If so, what OS are you using?