Here is my system specs

Tested Worked for me

AMD X2 550 @3.2Ghz @X4
4GB Ram DDR3 Ram
Sapphire Ati Radeon 4670 1Gb Version
Asus M4A78T-E Mobo (790GX Chipset with SB750)
Raptor 74GB Sata HDD

While in Windows you could use transmac for write downloaded img to disk and I just used my usb hdd for installation

Use transmac and write img to usb hdd or usb flash drive than boot it from there i mean select from bios than bootloader will appear and other process same as dvd for install

There is a folder called AMD Fix in img you could put your kext there for auto installation while installing from img.

While you boot img you could you this flags

voodoo -v -x32 cpus=x(depends your) fsb=200000000 (for my pheneom) busratio=x(depends your) maxmem=4096

Than you will see installer

You could select in installer the following tweaks

AmdFix(will put Amd_kernel to your root when installation finish)
EvoEnabler(for ati cards btw its worked for me just detected my vga like a 4890 but its oke really awesome using without dongle on vga port and all rezs working correct)
I didnt touch preselected tweaks.

I am using pci network card

D-Link DFE-530TX (used viarhine from ideneb 10.5.8 dvd and working without problem)

Used marvin utility to patch cpuids.

Everything seems fine now really good just waiting for on the fly patching cpuid support now with new kernel(i hope soon).