I have a 2.4 Santa Rosa macbook pro and I took a Pioneer 110 out of my old mac G4 tower. I put it in an external enclosure that is both usb 2.0 and firewire 400. I hooked the drive up today using both firewire and usb 2.0 and got the same weird results. If I insert a cd the cd shows up on the desktop. But, when I go to play them iTunes just freezes. I tried using the install disk that came with the enclosure but I get a message that says the disk isn't readable by this machine. Any ideas?