I've had a D50 for several years. Love it.
Lenses are pretty cheap on Ebay for them too.
Got my daughter a D40 for Christmas and she loves it.
My D50 lenses work fine on her D40 but they just wont autofocus.
She's into still shot nature photography so it doesnt really matter because manual focus is better in many cases anyways.
If you want a new camera get it from Best Buy if theres one in your area.
Got a 4 year Best Buy replacement warranty for my daughters camera for just over a hundred dollars. If they cant get it fixed they replace it no matter what happened to it. Loss doesnt count.
You can get a good deal on used stuff on Ebay if you know what good and bad things to watch out for.