Virtual PC 2007

Hi,  I am having Windows7 SP1 enterprise edition on system where i want to install Virtual PC 2007. I am installing it from the following URL :

http://www.microsoft.com/windows/virtual-pc/download.aspx

Problem is : Even after selecting right options in dropdown, I am NOT able to install since the setup.exe says :

"The update is not applicable to your computer".

This is disappointing that MSFT has not corrected the page even after so many people are facing this problem. Kindly tell me the right URL or tell me how to install.

Thanks

AJ