Welcome to Nikonians! The closest prime is the Nikkor 300mm f/4D ED IF AF-S ($1349.95 new) is optically superb and can be used with the Nikkor TC-14E II (1.4X (420mm)) or the TC-17E II (1.7X(510mm)) on your D60 while maintainig AF in decent light. While it is a little over your budget it is the least expensive 300mm AF-S prime available. The closest zooms would be the Sigma 120-400mm f/4.5-5.6 DG APO OS HSM ($999.00) or the Sigma 150-500mm f.5-6.3 DG APO OS HSM ($1069.00). Good Luck and Enjoy your Nikons!