  The scattering of two off-shell photons is an infrared-safe process in QCD.
For photon virtualities in the range of a few GeV, accessible at LEPII,
power-behaved contributions to the total cross section may become
non-negligible. Based on a dispersion relation for the running coupling, we
discuss these contributions and calculate the coefficients of the leading power
correction for transversely polarized and longitudinally polarized virtual
photons.
