BA: I am not a tech on these pages, but know enough that you should post a hijack this log. You can find it here.
http://www.majorgeeks.com/download.php?det=3155
And this is how you run it.
*Important* : Hijack This! needs to be installed in its own folder, as it creates backups that you may need later (create a folder in "My Documents", for example...). This tool can be dangerous when handled improperly, so, PLEASE DON'T FIX ANYTHING WITH IT YET !! and wait for instructions. Run Hijack This!, then click on "Scan". Once done, the "Scan" button will change into "Save log". Save the log, then copy/paste it here so we can have a look.
This may be an extreme measure but also may be well worth it.