Hi, if you download, install and run
CCleaner and clean out your Internet explorer browser cache, history, etc...
And then download, install and fully update both...
SUPERAntiSpyware.com - Downloads
and
Spybot-S&D! - Downloads
and run them both - and then run SUPERAntiSpyware in safe mode. You should be ok.
..if not, you may have something a little more serious going on. Try that lot first though.