SQL Links connect to server via TCP/IP?

I have a Delphi 1.0 application running over Novell 4.X Network with MS SQL
server as back end database.  Currently using IPX/SPX protocol to access
server.  Am trying to connect via TCP/IP and so far have been unsuccessful.
 I know I have a TCP/IP connection from workstation to server because I can
use ISQL/W configured for TCP/IP.

Have started with SQL Links and database desktop to just try to see the
server (which works on IPX/SPX machine) but can't on TCP/IP machine.

Anybody with any experience on this?