uofamis you are the man! I want to make sure your contribution do not go unappreciated. i am new to everything mac and have been discovering a whole new world of frustrations, but am quit proud of how far iv'e gotten in the last 3 weeks with the help of folks like you. my new audio workstation is now complete (as soon as my delta 1010 PCIx replacement card comes). I couldn't be more stoked ive been racking my brain an wallet trying to get my quad core running/stable for over three weeks and with a fresh install combining what has been working for me previously and your guide all my cores are rockin. sports guy if you haven't gotten your machine polished up yet i'd recommend starting with a clean slate and following this guide to the t. Thanks again to all who contribute for no other gain than to benefit the community.

CPU intel Q9550
mobo Gigabyte EP35-DS3L w/ onboard Lan and Audio AL888
RAM 8Gb DDR2 667
Nvidia Gforce 7300GT 256Mb video card
dual boot winXP64/OSX86 all completely working...so far