DirectX 10, which I am guessing is required by Vista's games and Windows Photo Gallery, is not present in Longhorn Beta 3. The games I got from a friend with Vista, Windows Photo Gallery I installed from the "Programs and Features" control panel. This may seem like a non-issue, but something should be done: either include DX10 with Longhorn Server or remove Windows Photo Gallery from Longhorn Server.If there is a download available for DX10 so I can enable it in Longhorn Server, or if there is an option that enables it somewhere, I'd love to know. Some people don't have a machine they can dedicate to a beta, you know =P

Fresh install of Longhorn Beta 3 - Enterprise image - dxdiag.exe shows that current DirectX version is 10. Perhaps you are looking for updated video card drivers?

Okayyy... this is wierd. I ran dxdiag.exe (I didn't even know such a tool existed) and got DX10. Hmm... but I AM using the latest drivers for my card from nVidia's website for Windows Vista (which Longhorn Server is built from).Would the output of dxdiag.exe help?

Sorry - I just gave it a quick look when I checked out your question the first time. A search for files that have "d3d" shows that there are onlylibraries for DirectX 8, 9 and 10 included with Longhorn. I haven't tried to run any games yet, afraid I can't really be of any help there. It looks like they have dropped a lot of legacy baggage this time around.

Problem is, Windows Photo Gallery isn't legacy... unless Vista is already obsolete!