  We present an analysis of twist-2, leading order QCD amplitudes for hard
exclusive leptoproduction of charged vector mesons. These processes are
determined by nonforward parton distribution functions which are nondiagonal in
quark flavor. We derive relations between flavor diagonal and nondiagonal
distribution functions based on isospin symmetry. Furthermore, we discuss
general features of rho^+ and rho^- production cross sections, and present
estimates based on a simple model for nonforward distribution functions.
