You could try downloading Spybot Search and Destroy, but I'm not sure if this will completely fix the problem. You may have more going on than just spyware. Do you have a Good AV??? You might also try AVG AV. See Links for both below.
The home of Spybot-S&D! Spybot S&D
AVG Free Advisor: AVG Anti-Virus Free, Update after downloading and then follow the prompts