If you had previously upgraded to UFT 3.1 do this first. If you have not upgraded before then restore the backup and then upgrade. It is a free upgrade you can download from http://www.uftree.com/UFT/Nav/ufttech.htmlhttp://www.uftree.com/UFT/Nav/ufttech.html
Now to restore the backup:
Open UFT, Click on "File - Open". Click on the down arrow next to the "List of File Type:" box and select "Backup". Place the first backup disk in the "A" drive making sure you have write protected the disk first. Click on the down arrow next to the "Drives:" box and select "A". Select the file name from the large box under the small "File Name:" box. It should appear in the small box. Click "OK" and you are on your way. Place the other backup disks in the "A" drive when requested.
You may have to select a drive or folder if the backup process request them.