Hi, I'm going to buy a new MBP (when and if the new ones come out). It will come with os Leopard installed on it but as I use ProTools I need to run Tiger. Now I've heard that I can't put anything less than 10.4.6 on an intel mac. is this true? and if it is where can I get a retail copy of Tiger since apple no longer sells it? Any help would be great, Thanks.