Locked CD digital photographs PDF files

I have a Photo CD from Sears with digital pictures that I want to be able to upload to Facebook, flickr, etc. But they are locked. These pictures are locked and only open as a PDF file. I can only print out the picture. How can I unlock these files to be able to share them?

Thanks. Baedaebok

 

You can open PDF files with GIMP, then save them to a BMP, JPG, or whatever format you need.