I’ve created a tool that helps manage Windows 7 VMs. Its biggest advantage over the Windows 7 built-in capabilities is that it can easily duplicate VMs. I’ve created the tool because I needed it. Therefore, it is free, lightweight, portable and open sourced. No commercial intension whatsoever.
Since I’ve published it other people have found it useful as well. If you’re interested in such a tool, take a look at xpmore.codeplex.com.