Oh,by the way, my favourite distro for PC is XXX 10.5.6! I think that this was the last one that the xxx team made.Anyway,it's easy to update it to 10.5.8. I had also managed to install iAtkos v7, but the AppleNforceATA test kext was responsible for some kernel panics during installation.
I still believe that you have to make a research to collect informations from people who are having similar systems with yours in order to make leopard run without too much effort! :-)