Configure Sybase Open Client to connect to the database that you want to access.
Use SQLEDIT to configure the Sybase client, or copy an existing SQL.INI file (located in the %SYBASE%\INI directory) and make any necessary changes.
Select NLWNSCK as the Net-Library driver and include the Sybase ASE server name.
Enter the host name and port number for the Sybase ASE server. If you do not know the host name and port number, check with the system administrator.
Verify that you can connect to the Sybase ASE database.
To connect to the database, launch ISQL and enter the connectivity information. If you fail to connect to the database, verify that you correctly entered all of the connectivity information.