I need Help connecting Delphi to ORACLE 7.2 Workgroup Server

Hi!

I have problems connecting with SQL Links to my ORACLE 7.2 Workgroup
Server. After doing all the steps discribed in the SQL_Ora.hlp file I still
can not connect to the Server. The displayed error message is the
following: "12548  3104  Network type unknown.". The Network is a TCP/IP
Network and this is also the Type of Network I entered in all Fields of the
Configuration Tool. If you know what is worng plase mail me.

Frank Geisler