Greetings all.. I have a Quad Core Mac Pro (2 x Dual 2.66 GHz Intel Xeon), which I want to upgrade. I'm told the (relatively) new Intel Quad core CPU's like the Clovertown will slot right in, but I cannot fond much info on the net. I need to know which CPU's I can run, and any additional info I might need. FYI.. I make music with the Mac using Logic Pro 7 and Tiger OS, if that helps.. Cheers.