Looks like Vnunet.com has TuneUp Utilities 2007 for free. This is one of the better computer tune up programs and has a large, loyal following. The license key is JMNCG-FKNGR-WMAMT-FRTQL-BLYJB-XDYMX and there is a discount offered to upgrade to TuneUp Utilities 2009. However the 2007 version is an exceptional product and may be all you need. It is Vista compatable!!!
http://www.vnunet.com/vnunet/downloads/2231665/tuneup-utilities-2007 – If this link doesn’t work you can click the link below to download.
http://www.pcworld.com/downloads/file_download/fid,30812 – This is the other link to download from if the above link doesn’t work, it’s from PC World.