Hi, I want to upgrade the USB and RAM on my (purchased in 2007) Mac Pro, 2.66. I would like to upgrade the USB socket to either USB 2.0 or 3, and go from the 5GB RAM that I currently have to a greater amount. I had previously thought that I would not be able to add any RAM, but having read about the upgrade possibilities here http://www.macupgrades.co.uk/store/machine.php?name=mac-pro I am now thinking differently. Are there any problems or issues which people have had upgrading with a Mac Pro of this 'vintage', or is there anything in particular that I should be aware / mindful of when I do this? Thanks in advance for any replies, gvdv..