12-19-2013, 08:11 AM
^^^ or if you're going to upgrade to 10.9...
Am with chscag, once a drive starts needing repairs, I don't trust them any longer.
Get 2 drives - one to make a backup - one to replace the existing drive and get a 8 GB thumb drive.
Make a backup
Download Mavericks - don't install it - create a bootable installer on the thumb drive - plenty of tutorials via google.
Boot the machine to the thumb drive.
Head into Disk Utility and see if it will repair the drive
If it does, exit out of it back into OS X and create another backup
Replace the internal drive with the new one
Boot to the thumb drive, partition/format the drive and install Mavericks
Restore from the backup