Apologies in advance if I missed a solution to this while searching.
I've tried two or three missions, but with all of them I find that after a while the graphics just die. The game is still active because I can switch between views and there's an audio change.
For example I can start up, taxi, takeoff, and then fly for perhaps thirty minutes and then it just seems to happen randomly.
I also have the dreaded BSOD sometimes. The last time I clicked the reset sensor button and it crashed, but that's less of an issue at the moment.
As it stands I can't complete a single mission.
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel® Core2 Quad CPU Q6600 @ 2.40GHz (4 CPUs) (overclocked to 3.2GHz)
Memory: 3070MB RAM
Page File: 908MB used, 4078MB available
OS: Windows XP Professional (5.1, Build 2600) Service Pack 3
Video Card: NVIDIA GeForce 8800 GTX
Sound Card: SB X-Fi Audio