To start MESSAG32 from the command line, type:

messag32

MESSAG32 prompts the user for where the message should be sent from:

1 - the local machine
2 - a remote server

If the message is being sent from a remote server, MESSAG32 prompts the user for a servername. MESSAG32 then prompts the user for who the message should be sent to as follows:

1 - a user
2 - a domain
3 - all the requesters on the LAN

If the message is being sent to a user or domain, MESSAG32 prompts the user for the name of the user or domain to send the message to. Finally, MESSAG32 prompts the user to enter a text string for the message.