Hey, I've just found out the Google's Picasa2 photo album program allows you to put captions into your jpg photos(via IPTC).

Any way, we could get a photoviewer that would support this(ie. put the text up on the screen)?

This way you could add all the writing from the back of your photos, as captions into the jpeg, and then see it on the screen(eg. Great-Grandma xyz).