It's a typical spyware, you need spybot to check for these things, although many are not harmless, you cannot remove these without a spybot program, then spybot will detect it, and put it in quarantine, hence basically removing it from your computer...things like this, spyware, starware, etc can sometimes be harmful to your computer, cuz they try to change the registry, but I suggest getting "Search & Destry", and Ad-aware.(made by Lava-soft These ones are free.Sybot-search & destroy is made by Spybot. I have Spywarebot, which I run every day, and always find some sort of spyware detected, so I just follow the directions to clean it up. This one wasn't free, but works well also.
spybot.com