Now that Beta 1 of Visual Studio .NET 2005 has been launched, and most developers **know its not that great** of an idea to install betas on their host machine (or main production machine), you should note 1 important thing about using VPC backup images.
Don't "save your state" when you plan on overwriting your current VPC hard drive with an older *cleaner* version. The image ends up blue screening on the next attempted boot and you have to end up copying the VPC hard drive image over again.
Just a friendly note from someone who had this happend to them 
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