I don't get many renaming requests, but when I do I do the
 following:

 1. Get the complete list from listserv.
 2. Change the header to reflect the name of the new list.
 3. Update the aliases table for the new list name
 4. Send the renamed list back to listserv

    At this point there are two identical lists with different
    names.

 5. If the old list had archives, I have them copied with the
    new filename. This preserves listserv's ownership.

 Doesn't take long.

 --Jim