You will probably need to modify the script to match your PCI bus. For example, when I run Hackintool or IORegistry, under PCI ->Display, I see something that looks like this:
03:00.0 1002:73af /PCI0@0/D0A0@1,1/D0A7@0/pci-bridge@0/display@0 = PciRoot(0x0)/Pci(0x1,0x1)/Pci(0x0,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)
Using this, I only had to change these two lines:
External (_SB_.PCI0.D0A0.D0A7, DeviceObj)
Scope (\_SB.PCI0.D0A0.D0A7)
When I was done, IORegistry showed my display as:
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/D0A0@1,1/IOPP/D0A7@0/IOPP/BRG0@0/IOPP/GFX0@0
I hope this helps, because I realize this stuff is cryptic.