Well, i have the following:
AMD AthlonXP 2600+
1GB DDR PC2700
ATI Radeon 9800Pro
SB Audigy 2 Platinum
from ATI Catalyst 4.4, the shiny hull thing, doesn't work, is that a driver issue or your code which you haven't been able to fix?
Also, the game slowed right down to 1fps....which is really dumb considering i have seen games look FAR better and still run much faster, but then again Vampire - Bloodlines was crap (performance wise and graphics wise, especially since it used the source engine.)
Anyway, i hope you stick to it being an optional option because i gave up with FSOpen ages ago because the graphical upgrades were not worth the MASSIVE slowdown, if you know what i mean.