Just heard that there will be a publicly (well, MSDN subscriber) avaialble download of a Virtual PC image of Visual Studio Team System 2005 (plus all the bits you need to run it) avaialble soon. We've been using this internally for a while and if you want to really get to grips with this great product, it's fantastic...not sure about the memory requirements yet - but I'd guess 512MB won't cut it :-)