Well, I'm not sure if I'm right but I think it's part of the big codec package, if you do have that stuff. Uninstall it, re-install it but when you see each codec in the package during the installation, if you see FFDshow in there, disable that. If you don't have the package, try find it in Add/Remove window? Or somewhere else I don't know. If you don't have FFDshow then I don't know, yeah VMware might be the best choice but if you don't want to do that, ask for support on the QHIMM forums regarding your vista issues.