Sorry Dobe, been meaning to post back here, but kept getting sidetracked by another post.
As far as NEF goes, you can only store and view. No other fancy stuff like slideshow, rotate and zoom. I myself would just store the NEFs as they'll most likely be PP'ed anyway. Once you've PP'ed, you can place them back as JPG and in smaller files. There's heaps space on the HD so I would'nt worry about filling it up in a hurry. Slideshow can be slow as it does a fancy close-up scroll over of the image before showing the image in full. A bit time consuming. Much quicker to flick through the images at a press of a button IMHO.
If you can see one in action at your local camera store, I'm sure it will blow your mind!
