I need to know how to clean confidential info, website info, and/or any other things off my hard drive without needing to reinstall Windows, etc. I made the mistake of signing up for "surveys" about 10 days ago, and I don't know if I've left myself vulnerable or not--but I do know I'm getting some emails from places that I, personally, did NOT go...can you recommend software for cleaning all that up? Also, any recommended way to remove software for things like Quick Time player and/or other things that I never use?