Windows 7 ATI OpenGL [Win7 x64]

OpenGL Flickering [Win7 x64]

Hi everyone.
I'm having trouble getting OpenGL running properly in build 7000 64bit with my ATI Radeon X1950Pro 512MB AGP.

I'm trying to run Counterstrike 1,6 but have incountered alot of different problems.

Depending on the driver being used the game either:
Shows background then exits (no warning or errors)
Keep showing background but no menus (though i can hear when i move the mouse over menu options)
Flickers in menus and some of the in-game graphics but not background
Flickers on the entire screen and runs at ~15 fps

This is all in OpenGL mode. D3D mode works sort of ok, but with framedrops (not Win7's fault, flawed Halflife engine)

The drivers tried:

8-3_vista64_dd_ccc_wdm_enu_59753
8-11_vista64_dd_ccc_wdm_enu_70230
8-12_vista64_dd_ccc_wdm_enu_72276
and atioglxx.dll's from other non 64bit vista drivers

Specs:
Intel Core2Duo E6320@2Ghz
Asrock 4CoreDual-VSTA
2x1GB Corsair XMS2
Sapphire Radeon X1950Pro 512MB AGP
Windows 7 Beta 1, build 7000 64bit

Any help would be appreciated