I just got it running late tonight and got to try one flight in AH. It ROCKS! I never knew what I was missing. The game graphics were absolutely stunning (at least to me).
I've got anti-aliasing maxed in the NVidea control panel, running a 22" widescreen LCD monitor (3 ms refresh/3000 contrast/60 mhz) @ 1600x1024 res with the game running 512 textures at 1024 res and holding 59 fps solid.
I'm going to try the high-res pack tommorow and let the game control anti-aliasing and see what that's like but at 512 textures with max anti-aliasing the picture is clean and sharp so I'm not sure yet which I'll find better.
I did make the mistake of not setting up a seperate Administrator account in XP though and now it wont let me install my Sidewinder software (Win95 floppy). I'm going to mess with that tomorrow. I bought a Saitek ST290 and used it tonight but it's just not my trusty old Sidewinder and I'm not sure how much new stuff I can adapt to at one time.
[EDIT] Oh, and for my first build I was SO happy that it booted on the first try...