Assuming you are referring to DOS...

You will need to issue a Net Use statement on the user's machine.

at the command prompt:

net use && This will simly show network connections
net use /h && displays the command syntax and options

TO MAKE THE PRINTER CONNECTION:

net use lpt1 \\server_name\printer_share_name /persistent:yes

the optional /persistent switch should make NT or 2000 remember this connection next time the user logs in.

Someone else may have more experience with NT and have a more elegant solution, but this works for me.