URuninstaller
Hi Bob, hindsight is a wonderful thing. I have been toying with virtualisation for a while. This event has motivated me.
As things turned out, my pc stopped freezing soon after I posted this. For no apparent reason. So Thanks for trying. and thanks seppoalanen.
If anyone does know how to do this, I would still like to know.
Don't know if this was the cause of my problem.
Find "URuninstaller"
http://www.ursoftware.com/
This will uninstall anything, completely, local files, registry, everything.
I have been using the 2008 version for awhile and I love it, it even uninstalls things that are supposed to not allow uninstall, like pesky antivirus software.
Unity PRO is not something I would want to keep on my PC. After I did one project with it, I noticed issues too. I had it installed inside XPmode, so I just deleted the VHD.
With Win7 and 64 bit many people have come to realize that VMs are actually a great way to go, even if you don't really have to.
Virtual Box, VMware work, but I really like XPmode. Seamless hardware integration, no weird stuff, easy setup, AND a free copy of WinXP auto installs on first open in a few minutes
This might be a negative if you want to load a different OS. I don't know if you can load other OSs in "XPmode", it might work.