Managed to get SL working. However wake up from sleep does not work. No response to keyboard or mouse (Still has power on). Display goes blank.
Wireless uses Ralink USB 2870. Disconnects after awhile and can only work again after reboot.

Specs:
Intel 945GZ (Mobo by Biostar, 775se micro) Pentium D
2.5 GB ram
USB working
SATA HDD
Cham 2 RC3 with boot fix to enable deep sleep

DSDT (If you can fix): Click to view attachment

If you are using disabler or nullcpupowermanagement kext you also need to use Sleepenabler. Sleepenabler is kernel dependent so be sure to use the correct one otherwise you will kp. Alternately you can patch your hpet in your dsdt (may work without the need for patch, test and find out) and remove whatever flavor of disabler you are using. Whatever you do keep an external bootloader handy.

Will qoopz kernel work? I'm using modbin's .432 one now.

hmm I should have looked a little more carefully at your original post and the Pentium D bit. I don't have a need for patched kernels so I am really not up to speed on the subject. However, I do believe most of them are variants of the voodoo kernel and incorporate black-listing "problematic" kext. I would assume AppleIntelCPUManagement is on that list, therefore, doing the same job as a disabler. I am not sure why you want to swap kernels since your build runs and you simply need to add sleepenabler. Briefly, failed calls to the disabled AppleIntelCPUManagement is causing your sleep issue, sleepenabler answers those calls fixing the issue. Other variants of the kernel will probably yield the same issue unless AppleIntelCPUManagement is not blacklisted and your hpet is up to snuff.