My Book Live FTP?

It seems like I’ve tried everything and can’t access my files through FTP.  Here is what I’ve done.

Registered my dynamic IP addy from Qwest with DynDNS.

I’ve also setup port fowarding for FTP (21) to the IP that is assigned to the MyBook Live

I’ve checked the box to allow FTP in the MBL settings and all user accounts, including admin, are password protected.

I can’t get anything to happen.  I need some help.