AppleintelCPUPowerManagement and AppleintelCPUPowerManagementClinet are, Disabler is NOT, NullCPUPowerManagement is in the Extra/Extensions Folder though...

Assuming I need Disabler.kext, is it possible to properly/effectively add it from a windows partition? And where can I get it?

Netkas instructions for the 10.6.3 update say all you need is the NullCPUPowerManagement text, of course currently I have attempted 10.6.2