Excuse my ignorance. I'm new at running Listserv and since I don't have any documentation (beta testing) and haven't had a chance to search through all of the commands and there parameters which it gives me, I don't know all of the ins and outs of the system yet. I have a subscriber whose address has changed. How do you change their address? I tried to delete their name and then add it back but got an error. I sent the following command: quiet del pbpk-l <useraddress> pw= <listpassword> It returned: You are not a registered NAD (Node Administrator) for node <usernode>. The NADs for this node are <nodeadmin address> PBPK-L: You are not authorized to act on behalf of <useraddress> No action taken. I also tried the listserv password and both gave me the same message. Is there a way that the subscribers themselves can change this? Thanks ahead of time, Von W. Rix [log in to unmask] NMRI/TD, Wright-Patterson AFB, OH Tri-Service Toxicology Consortium Phone: 513-255-6058