Finally got around to grabbing C&C3 and installing it under Vista 64bit. Ran
into a little issue that's kinda funny.

First I installed it under the True Admin account, but when I went to run
the game I got this error message
http://images1.filecloud.com/407563/CnC3_error.jpg

Which I found funny. But just to be sure, I ran Supreme Commander (another
game for Windows game), Stalker and HL2. All where happy. Just for giggles,
I re-applied the Feb 2006 DX runtime update. No difference

So I booted under Vista32, loaded the game and it worked fine.

Booted back under Vista64, it's pointed to the same install location as the
Vista32 and it still reported no DX9.0. I logged out and on to a standard
user account (with UAC enabled), Reinstalled again, same error.

Fortunately , there is already 3 patches out, So I applied patch 1.03 and it
then started fine under Vista 64. The patches don't mention anything about
this bug, but everyone seems to have undocumented fixes these ays. I played
through the first mission and the performance was fine, though the cut scene
videos seem a little choppy in the sound department.