Win 7 Business/Ultimate, Virtual PC XP Mode, Graphics Adapter

I have searched the Microsoft website as well as general Google, and can't seem to find an answer to a question...

With Microsoft Virtual PC 2007, the virtual software emulated a S3 8 MB 2D video card for graphics. This, obviously, doesn't work for any "gaming" application.

With Windows 7 Business and Ultimate, Virtual PC is getting an upgrade. (Including some nice seamless intergration into Windows 7 itself.) I cannot, however, find any information on what graphics adapter the new version emulates for use within its XP mode virtual machine.

As we all know, no matter how much Microsoft tries, a new OS will inevitably "break" some games since the software publisher can't publish an update to the game to make it function. (Whether this is because the publisher doesn't exist, no money to do so, etc.)

I know many people keep "old" Dos, Win 98 SE, etc. machines around for this exact purpose. (I keep a Win 98 SE machine around myself.)

Windows 7 will ultimately break some Windows XP games. With the free option to run a Windows XP Professional SP 3 environment as a virtual machine, this option would potentially alleviate this issue on newly bought pcs.

Does anyone have any information on this possibility?