Messaging from Server to Clients

Ours is Windows NT Server and it is connected to LAN with Windows 95/98 as Clients, to pass the message from server to clients both should have NT technology but our clients are windows 98. my question is how to pass the message from server to client when server as NT and client as Windows 98. if there is any DOS mode method to pass the message please mention it.

thank you
K.S.S.Aditya
Sys.Admin