I have 3 D80 Cameras and if they work and meter on that they will on nikon digital.
I use some older NIKOR AF lenses on my Nikon digitals such as 35-70 F2.8 and 70-200 F2.8
both are old push pull lenses,but the lenses that work with your D80
WILL NOT AUTO FOCUS on the D40 ,D40x,or D60 these cameras need the new lens with auto
focus motor built in the lens as the auto focus motor is not in the body like your D80. What do you plan to shoot with the new digital set up?
Give me some more info on what you need and plan to shoot and a cost frame and I can help you pick one that will work.