Mine

Dual boot with Acronis Intel® Pentium® 4 CPU 2.8Mhz HT, 2048MB RAM, ATI X600 PCIE. X600 works fine installing callisto drivers build 003 first (1440 x 900 @ 60 Hz 32bit), Kover patch applied and QE+CI enable by editing /System/Library/Extensions folder for ATIRadeonXXXXGA.plugin/ (XXXX depends on your card model). Edit its Info.plist, under IOProviderClass key change IONDRVFramebuffer to CallistoFB, update or delete Extensions.mkext and Extensions.kextcache, then reboot. Radeon Mobility X600 (M24) (PCIE):

 Chipset Model:	Radeon Mobility X600 (M24) (PCIE)
 Type:	Display
 Bus:	PCIe
 Slot:	PCI
 VRAM (Total):	128 MB
 Vendor:	ATI (0x1002)
 Device ID:	0x3150
 Revision ID:	0x0000
 Displays:
 Color LCD:
 Resolution:	1440 x 900 @ 60 Hz
 Depth:	32-bit Color
 Core Image:	Supported
 Main Display:	Yes
 Mirror:	Off
 Online:	Yes
 Quartz Extreme:	Supported