There seems to be one or two tantalising possibilities, but I still think what I need first is something to transfer the photos from my PC back to the SD memory card.
PS Re various suggestions about printing the photos, the thread I started earlier on this subject suggested that the cheapest price might be 15p per 6"x4" print. I am an inveterate holiday snapper (my world record was 10 rolls of 36 exposure film), so I was looking for a cheaper way of showing them.