Yes! Indeed, I have that very same D50 (lovely isn't it?) and I just happenned to have taken already some pictures with it, from the computer.
Once it's pluggeg, go in Applications> Image Capture.
From there, you will either be able to download all the picture from the D50, or take new shots.
You can even share the camera (and it's pictures) online, so someone can even take picture with it (through a webpage). You could even try this yourself, play around in Image Capture and with it's share features, and somewhere it will give you the adress (internal ip adress) so suposely someone from your network (including your own computer) could go, check, and take pictures.
I've tried the web interface from my computer, but couldn't make it work with another one from my LAN. Have to work around this.
But in Image Capture, first make sure the D50 is selected (Devices>[pick it]) and then there is what you are looking for in the upper bar of the window.
Have fun!
