I installed iATKOS v7 on my 1520 and almost everything worked. Only thing i had a problem with was video, i just booted in single user mode -s and at the command line removed the GMAX3100 kexts.right now i upgraded to 10.5.8 and every thing works, had to remove the gmax3100 kexts on reboot. Only problem i have is i only have 1024x768 resolution. its not the best, but everything else works. i'm currently looking for a snow leopard upgrade/install and i just found iATKOS S3 release so will test that out while this HacBookPro is still in the new freshly installed stages