  We present preliminary results of VLA HI imaging of selected Virgo cluster
galaxies. The goal is to study environmental effects on galaxy evolution. Our
sample of 41 galaxies is spread throughout the cluster and spans a wide range
in star formation properties. Here we present the total HI maps of 13 galaxies.
We find a number of galaxies with extended HI tails, almost all pointing away
from the cluster center. Truncated HI disks are found close to the center but
also in the outer region. Some galaxies near the cluster center show
compression of the gas on one side. Multiwavelength data of NGC 4569 and
kinematics on NGC 4396 indicate that some of the HI is extra-planar. These
preliminary results on the HI morphology already suggest that a variety of
environmental effects such as ICM-ISM interactions, harassment, tidal
interactions or mergers may be at work to affect the evolution of galaxies.
