Ok... I now know what DSDT is... but still confused.

DSDT is to "inject" kext on each boot, thus leaving the retail install untouched...

If you need DSDT to be able to boot, how do I know what kexts I need before I actually manage to instal SL ?

And if it boots, I dont need DSDT ?

Lets say I can boot, but no audio, video etc... how can I test kexts without hacking the retail install ?

And finally, wasn't Boot 132 supposed to be the best method, apple updateable etc ?