Re: trouble with dualmonitor /dual card configuration
Both the onboard i810 (845g) card and the geforce2MX are agp devices. I'm not sure if your motherboard chipset allows the use of 2 agp devices. Some motherboards support this (is officially an agp8x feature but some older non-agp8x boards support it and some newer agp8x don't).
If this that explains the problem.
Try one time with the onboard video disabled.