aero vista beta 2 s

i've been working all night to try and get this going, here's my specs first:
ati X850 PE AMD athlon 64 3400+ 2.00 Gig's of ram 50 gigs of free hard disk space (2 other hard-drives totalling in 400 gigs) windows vista beta 2 5384
Alright i installed the beta last night, activated it first thing. Installed the new catalyst drivers from ATI for my GPU. Updated all my other drivers (sound, wifi, etc.)
Ran the performance test. scored a 3 (it also states that i have an unkown graphics card) but, i still can't enable aero. In fact not only can i not enable it, but i don't have the option. It just doesn't exist, i can only choose vista basic, there's no other options (except older windows choices, classic etc.) and this is driving me nuts. I've searched everywhere i can and i'm still pullin my hair out. It doesn't even list my video adapter under my system information also some screen savers don't work, stating that i don't have direct 3d. Oh and i really don't want to use the downloadable aero theme either.
-please help i've already waisted 24 hours and i still really want to see aero in action.