Ccleaner has been highly, and frequently, recommended to me for a variety of computer clean-up type jobs. I wonder if someone who has used, is using, this product can/will suggest ways to set up the program when it is donwloaded as I have also been told Ccleaner can wipe clean one's HD. I am not extremely well-versed in use/maintenance of my computers. TIA Mary Fran Win7, 64 bit, Office 2010