Uninstall the version you d/led from them. Then run your spybot, ad-aware, anti-virus,and find a registery cleaner. Also do a disk cleanup and disk defragmentation.

Really sounds like your registry was hammered with spyware and adware. And there is a registry entry somewhere that keeps generating new entries, when others are deleted. That is the one you really need to find and delete.

You can "google" for registry cleaners. There are several good ones that are free or offer trial versions.

Once you have done all this use the Link LotR provided to d/l a clean version and istall.

Good luck