GeForce2MX - Max Resolution?

I have a Dell OEM GeForce2MX flashed to mac firmware and it works in my G4 (Digital Audio) but it only goes up to 1024x768 and im getting a TFT screen and that is capable of 1280x1024. What do i do? I have tried a different monitor and the max capable resolution is still shown as 1024x768 but that monitor could only do up to 800x600. The firmware version on the card is 1045F, it was flashed using a PC and a PCI graphics card (to see the output) using the original geforce2mx mac rom and nvflash. The mac is running OS X 10.3.9 Panther.