OK, I've been losing some time with this crap. Just for kicks and to quench that fucking thirst.
Used:
Vista 32bit Ultimate
9.10 CAT (driver only)
Latest Ray Adams util obtained from this fine site
Now, I created an ATT profile for the launcher (BmLauncher.exe), went
here for 8800GTX IDs and inserted those in the game profile (including the description). I haven't forced anything in the graphics settings.
This is what I got, firstly the driver update warning
Then the settings.
You can obviously set AA. Then when hitting the play button
Half of the times you get a crash, other times it just goes on and you don't get any AA.
So I associated that profile with the BmStartApp.exe, the game runs but without AA. Finally, I left BmStartApp.exe running and associated the profile with BmGame.exe and you finally do get AA but GFWL doesn't allow you to sign into any kind of profile since the game wasn't properly started (I assume).
If I force AA via ATT, even on 2x I lose over half FPS while on 4 and 8 I get a slideshow
Anyway, on the images below you can see there is AA (nothing major though), but you can't save the game.