Last night I upgraded my pc to 7 prof from xp prof. Unfortunately, the one casualty of the upgrade seems to be powerdvd ultra 7.3. I can install the original version, but not any of the updates. This makes it unusable. Even more unfortunately, about half of my video collection is HD-DVD, so I need this version of powerDVD to work. I even tried installing the windows xp virtual machine, but it won't run when installed to that. Does anyone know how I can get this version of power DVD up-and-running on a windows 7 box? I really have to be able to install the latest updates. Thanks!