Nikon uses Apple .mov format so of course Microsoft applications don't support it, but why? MS keeps saying how universal its new platforms are but probably have to convert (and therefore loose quality) to .mpeg etc.
I have a Nikon camera too and if I had known about the way Nikon had gone with its great quicktime movie standard I might have thought twice. Had to purchase converting software and filters, which I will probably have to renew for Vista