7600gs 512mb pcie

[gully666uk]

i have installed the new leopard without the drivers for nvidia cards as this causes my hackintosh not to boot but now i only have one resolution, i dont wish to flash my bios of my graphics card as i use it for a dual boot on vista any suggestions to make it work in a higher resolution and for it to recognise all of the memory as it only sees 256mb instead of 512 like it should.

thanks