You are going to need to patch your own DSDT.aml with pcwiz GUI DSDT patcher... and once you get a DSDT.aml, go to your leopard partition, and put it to the root of your Snow Leopard Partition. And make sure you replace the boot file and are using Chameleon RC1 with a snow leopard compatable boot file. once you are in..... do not boot with -f. That should work, or at least it did on my IPIBL-LA.