Hi,
What I did in chronologic form:
Mount Snow Leopard Distribution
Open up Disk Utility.
Click the partition or DVD to be the Installer
Click restore
Drag Mac OS X Install DVD to source
Drag Empty Partition or DVD to Destination
Check Erase Destination
Install Chameleon with hidden EFI method (Efi HFS option)
Uncheck Extras and install Chameleon 2.0-RC2-r640
Next you make changes in the Efi partition, I suppose that you can work in the Terminal and knowing the codes that you must use.
You must change the boot file, it is not from Netkas. You can find it here
http://www.insanelymac.com/forum/index.php?act=attach&type=post&id=54646And this kext files are necessary
http://www.insanelymac.com/forum/index.php?act=attach&type=post&id=54647And you can in Extra folder --> place the kext files that your system need.
If you did all the things that describe here, your system can boot a installation partion with Snow Leopard and it can also boot Snow Leopard