Satanic, I have seen them... if it's the ones I've seen then they are two units, one with a no-name screen, that connects up to a no-name head unit that plays DVDs, CD,s etc...
I was looking to go down this path, but how often do you carry DVD's in the car and actually watch them? Meh! I bought an mp3 player, rewired the whole rig, and got an aftermarket DIN slot for my smokes and mobile. (same as my old car had).
To be honest, the aftermarket DIN pockets don't fit too nicely and I had to do some dremel-modding to make it screw in nicely. I'd be more inclined in the future to try getting a genuine pocket from Nissan that apparently is used on Pulsars etc.
That, or buy the pocket that you had for sale, Stan! I kinda wish I had seen it first... it looks like it'd fill a DIN hole perfectly!