If you have Windows 7 Professional or Ultimate and want to access the Windows XP Mode and Windows Virtual PC features They are only available via Download from Microsoft (No Idea how large the Files are)
This news is in small print under the Features chart

quote:

....download of Windows XP Mode (which run on Windows 7 Professional or Ultimate) and virtualization technology such as Windows Virtual PC. Download Windows XP Mode and Windows Virtual PC free of charge from
www.windows.com/business/downloads.

I found the Download link easily on the US M$ page. On the UK or other "English Language" Pages I cannot find it at all!
I myself would download from there, Only difference will be minor spelling changes to Text Not the Code!