Try Spybot S & D click here
Adaware click here
CWShredder click here
Install, update, then scan and remove spyware.
If these don't work, try HijackThis click here Unzip Hijackthis.exe to its own folder, double click hijackthis.exe, click Scan, then tick the rogue entries, CLOSE all open applications, including IE or Explorer windows, and click the Fix checked button.
With HijackThis, if not sure about which items to tick, post the log here.