Graphics Card Error!?!?!

[Dramli]

cpu: 2.4 core 2 duo
RAM: 2gig
Hard Drive: 500gig
GFX: Radeon X1900

The beta 2 testing worked perfect for me but demo doesnt??

I get this Error message :

ERROR: The current video card / driver combination does not support the necessary features: GL_ARB_occlusion_query

HELP!!!!!!!!!!!!!!!!!!

Thanks in advance

Dramli

[gloowa]

get latest 7.9 catalyst hotfix. search for info in news.

PS
Important note for ATI users: You must download and install the latest Catalyst drivers (7.9 or later) in order to be able to run the Enemy Territory: QUAKE Wars demo. The next revision of the ATI drivers is going to include the hotfix.