What's "Up Chuck"?

Taking a quick break from work to ask for some help. Last Sunday night my daughter loaded some game/crap on my computer and every since things have been acting funny. Most aggravating is my mouse. When I scroll down, or use the wheel on the mouse the page moves down in a sort of "wave" effect instead of the smooth page down slide I used to have. I have tried messing with my mouse settings, but nothing helps. I have a Dell laptop running Microsoft running Windows XP home addition. Do any of you computer savvy peeps out there know how to help me?? Please??