SYNTAX:
First re-enable the FTP service. Then try to connect, on your internal network, to the computer via a client command prompt with the command "ftp brenprint" see if it sees the computer. This will find out if it is a syntax issue or not.
ACCESS METHOD:
The method of access was not mentioned. The fact that "www" was brought up, leads me to believe you are using a web browser to access ftp. Typing ftp.brenprint.com should work if the service is enabled, since the "www" access is there(same protocol, same method of resolution).
NAMING SCHEME:
If you are internal, you do not need the ".com" unless the host name is such. If it is "brenprint.com", change the host and NetBIOS names are "brenprint".
".com" in a host name will cause nothing but pain.
SECURITY:
Make sure the default port has not been changed for the "ftp" service. If it differs from 21 the client ftp app has no idea what to access.