To install Windows Virtual PC follow these steps: Install the update package: 1. Open Windows6.1-KBxxxxxx-plaftform.msu, where platform is either x86 or x64 and xxxxxx depends on whether you are installing XP mode beta or RC or the final release. (This file is available from http://www.microsoft.com/ windows/virtual-pc/download.aspx ) 2. Review its end-user license agreement and accept it to install the update. 3. To complete the installation, you will have to restart the computer. 4. After it is finished, Windows Virtual PC is available in the Start menu. After you install Windows Virtual PC, you need to set up Virtual Windows XP.