Guys,
Writing to let you know that we've had a successful run in PRODUCTION for service behind the firewall (using PASV transport) and through the firewall (using ACTIVE transport).
I will recommend you library to the powers that be within the organization from project to infrastructure to proxy and finally to firewall personnel for all future DOT NET related FTP work.
Good job and thanks for the wonderful support provided me during my time of duress.
Bill