I installed the Vegas 8 Pro and DVD-A 4.5 trials as well as all the .net and C++ addins. PC is a dual processer with 4 gig RAM. XP Pro SP2. DVD-A 4.5 locked up all the time so I figured for now I'd revert to DVD-4 and V7. DVDA -4b runs slow as the second coming now, despite doing a system restore back to August. Used Regedit to remove all references to V8 and DVDA4.5. How do I get back to where I was before adding .Net 3 et al? Do I need to put in a new program drive and reinstall XP Pro to regain the functionality I had prior to the Trial install?