Dell sell systems with Vista 64 installed. It is asinine that one of their C/S reps would tell you they don't support it. I would have roasted the fool...
Thats crazy right there, If you look at it sarcastically, they really don't support any vista, They TRY to support it. Just saying.
Agree that after windows 7 the next OS will be 64 only if I am guessing. Good indicator is exchange 2007 does not support 32 bit OS for its host.
Its about time to switch over to ubuntu anyways. Dell and HP are selling it as a workstation alternative now on their PCs again.