I just installed 10.5.7 and it works for the most part. My wireless card still cuts out and I have no sound ATM but I can survive. It seems seatbelt.kext isn't needed anymore for mounting dmgs, it actually CAUSED a kernel panic. I backed it up and removed it, rebooted and dmgs mount perfectly fine now.

The only thing I'm hoping won't cause problems is that system info shows my CPU as a 200MHz unknown, I have an Intel C2Q Q6600. I'm not sure why it's not reading it right but it doesn't seem to slow down the system at all. Appears to be running at full speed.