you have spyware and adware running on your computer. perhaps a virus too. scan your computer thoroughly for a virus and for spyware to make sure you don't have any of these on your computer.
Herb....
i have chosen yahoo as my homepage, every time i restart my computer the hompage is changed to some weird searh engine. how can i fix this?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic