Many years ago I had had Adobe Photo shop 1.1 on my computer which I used to edit quite a few photos, it saved them in files called PDD which I in turn burnt to a disc.
I no longer have that computer or the Adobe program but recently came across the disc but unfortunately no program on my laptop will open PDD files,
is there a program I can download free that will convert PDD files to JPEG
You should keep this as a day-ta day picture viewing software .. It will also play some sound formats, video too, and is a basic editor.
It will not read the 'layers' in a PSD file though .. just the combined image .. if that is not a problem, use it!