I intend to upgrade to a quad core iMac whenever it releases and I'd like to transfer data from my previous iMac, a G5 whose motherboard is dead. How can this be done? Are there any DIY methods? Also, in regards to the new quad core mac, are there any risks posed by utilizing two different brands of RAM that have the same specifications? Specifically, I'm considering upgrading to the 8GB deal offered by Macmall.com that I'm assuming uses the standard 4GB of Apple RAM and 4GB of Kingston RAM.