Oh I might read badly but I am giving a link to be sure. IT MIGHT be a x8 pin needed. I am upgrading so I wont upgrade anything else. So here is the link (http://www.epinions.com/specs/pr-ATI_ALL_IN_WONDER_X600_PRO_graphics_adapter_RADEON_X600_PRO_256_MB_Graphic_Card).
IF it has same or smaller PCI than 9600 than it will work. Please reply fast :P