Those of you examining the specs will notice Vista is not included. This does not immediately mean you cannot play if you are using Vista, but you may have to do some fancy footwork to get things going. Or it might work immediately. Welcome to Vista, Schroedinger Edition.
For those that might need it, some tips to get it working with Vista if it gives you problems:
Go <a target=_blank href=http://forums.station.sony.com/ps/posts/list.m?topic_id=88000012599>here first, and scroll down to "Issues with Windows Vista".
Additional, and more advanced, options are <a target=_blank href=http://forums.station.sony.com/ps/posts/list.m?&topic_id=88000005971>here, mostly in the first post, but there's other reported tricks scattered through the various pages.
(I will also be occassionally crossing my fingers for you, in case that works. Can't cross them all the time, otherwise agkdsahibn iar ghnrg sajhgdho, and nobody wants that.)