@RAS, the users are dialling up the NT server. My users are using their own ISP dialup (which is free) and VPN tunnel across the Internet to my Shiva VPN gateway.

I have found that @ipaddressX can be used to check IP address. A Win 9x station can have 4 IP address. Change X accordingly from 0 to 3. I am currently trying to figure out the program logic.

Any comments, suggestions or alternative methods are most welcome