Thanks for the tip, Jon. I made the changes, and the form makes sense to me, now that I have read the doc's a couple of times.
However, when I attempt to download a linked file from the browser, it responds with a 'server not found' message. I have a call into the authoritator host to double check the zone record.
In the meantime, I have a couple of questions I hope are releated.
1. Is there a permission I need to set on the primary domain to allow FTP a la iBays?
2. Is it necessary or useful to enable DNS on SME for local activity?