Everything you want to know about Visual Studio ALM and Farming
Brian Harry is a Microsoft Technical Fellow working as the Product Unit Manager for Team Foundation Server. Learn more about Brian.
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I've seen people run into some issues doing this and one of the guys on our team wrote a good blog post on things you need to do. Check this out if you are trying to use the VS/VSTS/TFS 2010 CTP under hyper-V: http://blogs.msdn.com/granth/archive/2008/11/03/converting-vs2010-ctp-to-hyper-v.aspx