Do you use a Nvidia Geforce 6800?

If so, have you found a stable driver? For two years I've used 77.77 with fs9 and FSX, and had no problems. But today, while running post-SC1 FSX, I've had my first-ever CDT and first Microsoft response to an error report: "problem caused by Nvidia graphics driver. Recommendation: update driver." But which to choose? On past experience, going for the latest only seems to work if you have the latest video cards, so Ive always rolled back to my faithful 77.77. If anyone can recommend an update, I'd really appreciate it.Athlon 4000+2mb RAMNvidia Geforce 6800 GT77.77 drivers