Also keep in mind when you have one odd/unwanted thing that sneaks in that there may be others...

I would suggest running the following:
Adaware, Spybot Search & Destroy, an online virus scanner, and an anti-trojan.
And you may want to run HijackThis and post the log here for examination.

Good luck!

Sorry no links - I'm not on my pc - look all the progs up in the forum - links are there