Sorry to be an ass about the headline, but this isn't as good news as most here probably hope. After trying EVERYTHING to get this working on my Radeon X1950 Pro...I was never successful.
But it's still working with a Radeon, yes it is! Just picked up a Radeon HD 3850. Any why not? It's
well under $200, about
double the performance of the Radeon X1950 Pro I *had* (I played at 1280x1024, and Sh4 seems closest to mirroring 'Oblivion' in performance, so check those graphs), LOWER power consumption and heat output, etc. What a difference a year makes!
But...yeah. Same driver version I was using with my X1950 Pro. Same settings - in-game and in the CP. And sun bloom works on this card when it didn't on the X1950 Pro.
Moreover - note the 2d texture of the gunsight. See anything interesting? Why, yes, adaptive AA *is* working. And no green border on the screen!
Quite an amazing card, this - faster, lower power demands, modest price, seems to fix all the bugs the X1K series had.