ZZTopping

Open a command prompt with admin rights(if you UAC turned on, just type cmd into the search bar of the start menu and hit Ctrl-Shift-Enter)

Type:

reg add HKLM\SOFTWARE\Policies\Microsoft\WindowsMediaCenter /v MediaCenter /t REG_DWORD /d 1 /f

To re-enable it(not likely to happen )

reg delete HKLM\SOFTWARE\Policies\Microsoft\WindowsMediaCenter /v MediaCenter /f

Wow…what an article:

http://www.babeled.com/2008/06/24/reaganomics-trickle-down-theory-suppliy-side-economics-or-by-any-other-name-is-still-a-fallacy/