URGENT HELP NEEDED!!

I AM RUNNING A WATCOM SQL 4.0 SERVER ENGINE ON WIN NT 4.0. I LOAD THE
DATABASE WITH IPX, TCPIP, AND NETBIOS LINKS. IN THIS LAN , THE WATCOM
CLIENTS WIN 311 HAVE INSTALLED IPX/SPX AND TCPIP. CLIENTS ARE STARTED
WITHOUT ANY PROBLEM HOWEVER, A SINGLE WIN311 REMOTE STATION (CONNECTED
THROUGH MODEM) CANNOT START THE WATCOM 4.0 CLIENT . IT GIVES THE MESSAGE
"UNABLE TO START-SERVER NOT FOUND". i TRIED ALL THE PROTOCOL LINK S AND THE
SAME. ON THE OTHER HAND THE NETWORK WORKS PROPERLY , I CAN BROWSE ETC.
DOES SOMEBODY OUT THERE KNOW WHY SUCH A THING HAPPEN!!