This MacBook Pro lives on the kitchen counter. We tried an external hard drive for our photos but it was always in the way and seemed to get bumped and disconnected much too often. We needed was a large internal hard drive.
The repair was done in one evening. Used SuperDuper to backup the original hard drive and followed all the instructions to install the new 750GB hard drive. The three recommended tools are all essential. We restored the hard drive and rebooted with new hard drive.
I recommend this upgrade to anyone with an audio/photo/mov