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VS 2005 R2 can be installed on Vista home
http://everyjoe.com/windowsvistaweblog/install-virtual-server-2005-r2-in-windows-vista/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%253A+b5media%252FWindowsVistaWeblog+Windows+Vista+Weblog
thanks
Haitham