I just bought a new 320 gig 7200RPM hard drive for my Macbook pro to replace its internal drive. However, I seem to have lost my Leopard disks. I believe they are at home, but I am not at school and would not be able to return for them for a while. Is there any way that I can create a bootable image of my system and transfer it over to an external hard drive, put in the new drive, boot from the external, and then transfer the system image back to the new internal? How might I do so?