This is an old photo of my Aunt and Uncle. To repair the folds I used Photofilter (a free download) I enlarged the photo, selected the clone tool on fixed. Then I cloned out the lines. To do this I would select the area closest to the damage so the colour matched, setting the size...for some sections the smaller the better...about 8.
I did the cloning section by section, and it took about an hour.
I was happy with the final result. Tracey :)