When you try to install and run certain legacy games or applications in Windows Vista, you may experience one or more of the following symptoms:

-) The game, the application, or the firmware may not be installed correctly.
-) The game, the application, or the firmware may cause system instability.
-) The primary functions of the game, the application, or the firmware may not work correctly.

http://support.microsoft.com/kb/932246/en-us