  We present a first estimate of the cross-section for the exclusive process
gamma^*_L (Q_1^2) gamma^*_L(Q_2^2) -> rho^0_L rho^0_L, which will be studied in
the future high energy e^+ e^- linear collider. As a first step, we calculate
the Born order approximation of the amplitude for longitudinally polarized
virtual photons and mesons, in the kinematical region s >> -t, Q_1^2, Q_2^2.
This process is completely calculable in the hard region Q_1^2, Q_2^2 >>
Lambda^2_{QCD}. We perform most of the steps in an analytical way. The
resulting cross-section turns out to be large enough for this process to be
measurable with foreseen luminosity and energy, for Q_1^2 and Q_2^2 in the
range of a few GeV^2.
