I forgot to mention that the jpgs do contain tags that are visible in Opanda, but I've never checked for them in Photoshop (I've only shot 5 jpgs in my life and each time was only to check in Opanda). I will check this when I get home and post to see if I can see the jpg tags in CS2.
I have not heard of Nikon 'resetting' the 'shutter counter'. Maybe it was an inherent part of the process of fixing the PC socket - they had to flash something else ???