Hello all. I've got a D60 with the 18-55mm dx vr kit lens and also the 55-200mm dx vr lens. I'm wondering if I would ever choose to upgrade my camera body to say a D90 or even some of the upper level pro camera bodys if these lenses would still work? I didn't know if there are compatability issues because of the auto-focus motor in the lenses I currently use with the D60. Or is this a stupid question because if I am going to spend money on a nicer camera body I should also be spending cash on the lens?