My wife was unable to open wmv. files. When I go under Folder options and file types, wmv isn't even listed (seems strange). Somewhere I was told to run a reccomended Registry scan and repair program (the computer is slow also, geting more memory tomm.) anyways the program is Uniblue Registry Booster 2010. It found 328 errors, and would fix 15 for free and the rest if I bought it. Is it worth buying? Are there free ones out there and does this seem like alot of errors or is this common?