Try this:

1. Download AdAware SE and SpyBot S&D, update them and run them in safe mode.
2. Go to the Trend Micro website (PC-Cillin) and run the "Housecall" online scanner.

That should solve your problem and get rid of anything else you have picked up .

In my experience these things rarely come in ones

I hope that you have a firewall and AV that you keep up to date as well?

Good luck