Thanks to everyone for your quick replies! The Veeam FastSCP solution worked perfectly for us! Since all of this work is being done on our internal network, behind a firewall, with none of the relevant ports exposed to the Internet, the security issue was not a concern for us.
I have also found the VMware Converter standalone to be useful as well, but FastSCP is really the type of solution I was looking for in this particular case.
Thanks again,
Shump