Hi,
I'am new to the hackintosh and would like to install a different graphics card but I cannot find the drivers for either of the two cards i have a PNY Nvidia Quadro FX550 pci-e or the radeon 2600xt.
I have naively tried in-stalling the Radeon (which came from my work power mac) and once past the initial startup the screen goes light grey top half and black the bottom half. Any ideas or help most appreciated.

beardyweirdy