I had this problem with the pop ups also.
First I tried a popup blocker program. That just seemed to cause more problems than I had before.
Then, my husband downloaded some software to get rid of spyware programs. It is called adaware6 and you can download it here: http://www.lavasoft.de/support/download/
It found like a million of the little buggers on my computer! I deleted them all and.....
Guess what? No more pop ups! And my computer runs much faster, to boot!
Hubby says to run it weekly.