You can download Microsoft Virtual PC 2007 from this link:
www.microsoft.com/windows/products/winfamily/virtualpc
An uncomplicated setup procedure is involved. You can accept the default settings, and Virtual PC will install in a few minutes.
When the installation is complete, launch VPC and click on Settings to configure your first VM. Here you’ll need to specify details like how the mouse works and the number of hard disks your XP installation will have. We suggest that you start by clicking on a File Name and give a mane to your VM. For example, you could use “My XP PC.”
Next, select the memory option and set your VM to use something like 256 MB of memory or more. Selecting half of your PC’s memory size will let you run both versions of Windows properly. Click OK when you’re done.