I've run into that one a couple of times. When I tried running spybot and ad-aware, neither saw it, to be able to remove it. I ended up doing a search of the registry for the name of the toolbar. The toolbar name was all random letters like, dbfgkjpr. When I was deleting the entries in the registry, I also looked at the information in the keys, and saw that it was refering to an odd .dll and also a .exe which I don't remember what it was called. I then deleted those files also. That finally got rid of it. It's dug in deep.