crap! crap! crap!

My camera broke today. Not this one in the photo, but my DSLR. (The one above is from my first Nikon. The film one.) The part that is in focus is the part that broke off. I was looking at my old camera to see if I could replace this part myself. But I decided to leave it to the professionals.  The good news is that three of my lenses still work with my D80. The bad news is that the one lens that won't work until I get this fixed is MY VERY FAVORITE LENS. Of course. If anyone out there has had this happen and has any ideas or cost estimates, please let me know.