|     I will be adding the new subscriptions manually, and would like
|     to avoid having any listserv-generated subscription notification
|     message sent to the end users that I subscribe.
|
|     Is the use of the QUIET command before the ADD command the best
|     way to do this?

Maybe, BUT QUIET will:

1) will suppress a WELCOME file (if it exists) from being distributed

2) not allow you to corroborate the validity of the recipient's email
address by automated means which means you will probably want to send a
"test" message to the list to verify addresses.

/Pete