Hello All, I recently purchased a mac pro 2.8 w/standard 320 GB hard drive and 2 gigs of ram last Saturday. I immediately updated my software when I connected to the net and I have 10.5.2. Little did I know the update does me no good because I wanted to use my computer for music and pro tools doesn't work with 10.5.2. I wanted to know what is the best way (if possible) to downgrade back to 10.5.1? I have the install disc for OS X (10.5.1), the computer came with it. Is it easy as inserting the disc? I know I'm probably going to lose all of my files that I have on my hd so far, but I really didn't get to do anything so I don't mind. Thanks in advance for your help.