yeaah that's why I removed it ...

And you didn't have to add the latest MeDevil's kext as it's already included. If it's not working try to replace it with the one from 10.5.1.

Create a folder named Extensions on your Desktop
Unpack the mkext in this folder
EDIT: mkextunpack -v -d /Users/"YOU"/Desktop/Extensions /Volumes/"YOUR ISO"/System/Library/Extensions.mkext
Remove the MeDevil's kext
Replace with the one from 10.5.1
Fix the permissions

type

kextcache -a i386 -K /Volumes/"Your ISO"/mach_kernel -m /Users/"YOU"/Desktop/Extensions.mkext /Users/"YOU"/Desktop/Extensions

and place the newly mkext in the ISO

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Mac OS X 10.6.3 • 2.8 GHz Intel Core I7 860 • ASUS P7P55D • 2 GB 2 Ghz DDR3 • ATI RADEON XFX 4890 1GB • 2 x Hitachi 160 GB Serial-ATA • PIONEER DVD-RW DVR-112 • LaCie Desktop Harddrive 750 GB USB