Ghost 14.0 - How to reinstall files, with no set points

Hello all: I have Vista Home Premium and the O/S was corrupt on my HP desktop. So I added a 1T external drive and used Ghost 14.0 to make a backup of the files to this drive. Then Used HP’s  system recovery disks that were made when the computer was new a couple of years ago. Now when I try and use Ghost to restore these files, I can’t because it can not find a recovery point. The recovery point was lost when I used the original HP system disks, they restored the hard drive to originally received condition. How do I reload these files from my external HD? Thanks, Don