  We present our project on galaxy evolution in the environment of distant rich
clusters aiming at disentangling the importance of specific interaction and
galaxy transformation processes from the hierarchical evolution of field
galaxies. Spatially resolved MOS spectra were gained with VLT/FORS to analyze
the internal kinematics of disk galaxies. First results are shown for the
clusters MS 1008.1-1224 (z=0.30), Cl 0303+1706 (z=0.42), and Cl 0413-6559
(z=0.51). Out of 35 late type cluster members, 13 galaxies exhibit a rotation
curve of the universal form rising in the inner region and passing over into a
flat part. The other members have peculiar kinematics. The 13 cluster galaxies
for which a maximum rotation velocity could be derived are distributed in the
Tully-Fisher diagram very similar to field galaxies from the FORS Deep Field
with corresponding redshifts. The same is true for seven non-cluster galaxies
observed in the cluster fields. The TF-cluster spirals do not show any
significant luminosity evolution as might be expected from certain
clusterspecific phenomena. Contrary to that, the disturbed kinematics of the
non--TF cluster spirals indicate ongoing or recent interaction processes.
