I have a macbook black 2.4ghz 2gb ram, 250gb hard drive and I want to replace the install disks and they cost an arm and a leg from apple. I saw some for sale on ebay, but I don't know which ones are right for my computer. A few months ago I found a site that gave you the exact disk #'s that you needed for your mac and I can't find it anywhere. Can someone on MR help me out? I really would like to have a set. Thanks.