Anyone still got one of these old laptops?
So start by making a bootable USB stick with MyHack with version 10.7.0 of Lion.
Then get AppleACPIPlatform.kext and IOPCIFamily.kext from SL 10.6.7 and put them in /Volumes/name_of_usb_installer/System/Library/Extensions, replacing the two already existing kexts on the USB. This step is very important, otherwise you wont be able to boot the installer.
Then run myFix on the USB stick, in the quick way.
Reboot and boot the installer with arch=i386, so the kexts for Intel GM950 will work.
Install should run smoothly, then the system will reboot.
After the reboot, boot again the system from your USB stick, load the installer again and open the Terminal applications from Utilities -> Terminal.
Then replace AppleACPIPlatform.kext and IOPCIFamily.kext on your HD drive with the two existing in your installer by typing:
cp -R /Volumes/your_usb_installer/System/Library/Extensions/AppleACPIPlatform.kext /Volumes/your_partition_with_lion/System/Library/Extensions/ [enter] cp -R /Volumes/your_usb_installer/System/Library/Extensions/IOPCIFamily.kext /Volumes/your_partition_with_lion/System/Library/Extensions/ [enter]
Then run myFix on your HD partition.
Reboot and Lion should start with boot flag arch=i386, otherwise GMA950 won't work.
Audio: ALC883, made it work with VoodooHDA (I think it may work with DSDT patching too, not sure)
KB/Touchpad: worked OOB
Wireless: damn Intel 3945, not working, managing to switch it with a Dell 1390
Ethernet: Works with AppleBCM440XEthernet.kext
Speedstep: works with VoodooPowerMini.kext
I have forgot something of course, this guide (if anyone is interested) will be kept on with updates. And sorry for my bad english...