Quote Fayrin:Kill it! Kill it with fire!
I would run all your anti-virus softwear just to be sure. Also I would check if you happened to download something else with winrar (Like a stupid toolbar or something). Check this vid Add/remove programmes and if you do find something that doesnt belong, kill it.
There are a few things that I saw that I can't remember if they're supposed to be there or not.

Oi this isn't very good. :/