Guys,
Windows 98 machines dont come with the net send command.
If you try and send a message from an NT box to a win9x box using the net send command, the win9x user wont receive it. Only NT boxes which use the messenger service for the net send command will auto-receive the message.
To get a win9x machine to receive it, use the winpopup.exe program that comes standard with win95 and win98, and is located in the \windows directory.
To make the job of administration easier, add a line for win9x users in a logon script, to activate this app upon logon.
Cheers,
Simon
MCSE