It's not that hard! Kext=kernel extension=driver, so forget about what you may already know about drivers for windows.This is a totally different approach!
If you create an installation dvd with the proper kexts for your system inside it, you will be fine! But the easiest way is to get a pc-based distribution like iatkos,ideneb,xxx,iPC e.t.c. and install leopard from it. And that's because many kexts/patches are included on such dvds.

About my system:
Motherboard: Supermicro H8DAE-2 with nVidia MCP55 Pro chipset which supports up to two Six-Core AMD Opteron 2000/8000 processors
Super Micro Computer, Inc. - Aplus Products | Motherboards | H8DAE-2
Processor: 1x Opteron 8214 (for the time being) :-)
Ram: 4 GB Samsung DDR2 667 Registered ECC Unbuffered
Graphics Card: Nvidia 9400 GT
I also have two SATA hard disks, 120 GB and 640GB , a Sony IDE DVD reader and an Optiarc DVD Recorder.