Hi,
I don’t know if this is 100% or not; but one thing that will help stop it in the future is after you’ve been surfing someplace you think might be suspect of putting this crap on your PC; is do a search for files added for that day and delete anything you don’t reckognize.
have you went to their site and looked for a way to take their crap off your PC? that worked once for me. I clicked on properties to see where the site was that was serving the banner ads and then typed that into my browser; a little while later I found a link there to take it off my PC.
sorry, but I can’t remember the site; but its not likely the same thing anyway. But try what I said and maybe it will work.