What sort of budget do you have? DSLR or digital point-and-shoot? My initial foray into digital has been with a Sony F828 (a higher end point-and-shoot) after years of using Nikons for 35mm stuff. I can tell you that unless you intend to produce poster-size prints, you can do very well with modestly priced equipment. The camera is hardly the limiting factor for most herp shots--much more important is the person behind the lens. Good photography comes with practice and understanding how composition, lighting, and other elements affect the image. That said, Nikon, Sony, Canon, and Olympus, among others, have some very nice equipment. Try various cameras, in hand, to see which ones fit you, as they differ greatly in size, shape, feel. Good luck!
Examples from the 828...first two taken here at the ranch, third (a non-kingsnake!) in the field.


