I changed from Vista to Windows 7 and now my mouse options are limited and I cannot get my old logitech mouse to work as before. Is there a FREE download that I can do,I cannot find my original disc, it is about 2 yrs old. Any suggestions? Also now with Windows 7, the sound in the Control Panel does not come up when I click on it. Can I reistall the CD (Win 7) or would that be a problem? Thank you