There is a bash script around that fixes most of the stuff for that board.
It's post install though, you run it from the working osx.
http://www.insanelymac.com/lofiversion/index.php/t59435.htmlI think this is the one anyway
I've got everything working fine on mine, from memory just using the script.
IDE on this board, that's JMicron PATA isn't it? I'm not sure about support for that in any of the installer disks yet, maybe do a checkup on that.
It might be easiest to get a SATA drive, enable AHCI in bios, disable JMicron.
The install using XXX 10.4.10, with SATA and the bash script was relatively straight forward from memory.