Hello,
In our upcomming version (5.0) ProDiscover will read E01 files. This all works internally now, and you should see it within the next 60 days. Until then, ProDiscover will read .dd (raw) images so you could convert the E01 image to dd and add it locally. Another option might be to mount an E01 image locally with a tool like mount image pro and add that dirctly to the ProDiscover project.
Regards,
Christopher L. T. Brown, CISSP