First of all try emptying your cache. Then install 3 programs, Adaware 6.181, Spybot Search & Destroy 1.2, Spywareblaster. Get adaware from http://www.snapfiles.com/get/adaware.html , Spybot from http://www.safer-networking.org/index.php?page=download & spywareblaster can be reached from within Spybot. Open spybot, go to immunise & there is a link to javacools software, click on that & download the program. All of these are free & need to be updated on a regular basis. The first two programs are spyware removing programs, the last prevents spyware from installing itself on your computer. Once installed, update the programs & run them. It is safe to delete whatever is found as a backup is made. In spybot, on the check page, make sure only the spyware check is selected.
See how you go after doing this.