Hi Rune,
I have Win XP SP2 and AMD DC 6000 + HD2900 XT card, I have the Opengl error using both 7.6 and 7.7 drivers. In the ATI Catalyst Control Panel, the only OpenGl elements are Triple Buffering on or off and Force 24bit Z buffer depth. With the 7.7's i've tried these on and off but to no avail, same crash happens time after time, additionally, I can't say that changing these options has an appreciable effect on the grafix. I don't appear to have a performance problem, only a delay in selecting a unit then a crash when trying to issue a waypoint. All other game functions appear to work ok. Have also tried all the other fixes on these forums.
PS, my machine is brand spanking new and with all updates installed and this is the second game installed on it.