I have the d40x & LOVE it! Essentially, it's the same as the d40, but it's higher megapixels! Amanda, I tried to find it, but I couldn't. Do you know if that's the same w/the D40x w/the 50mm lens? I've really been wanting it!
You rock!Scroll down on this page and look for the Digital SLRs chart:
http://www.kenrockwell.com/nikon/compatibility-lens.htm
It will tell you which lens is good for your camera. I think you will need a lens that has AF-I or AF-S on the name for it to autofocus.
I'd LOVE to get my hands on a D90. My camera has been acting up ever since I messed up and bent the pins when i accidentally put my card in wrongI have to adjust it and take the card in and out and play around with it every few shots.. its SOOOOO frustrating!