> I've installed Firebird to a Win98 machine as server. From clients I can not connect to my database.

Is your IB server started ? Can you connect to it locally ?

In pre-IB6 versions there was "Communication Diagnostic Tool"
that you can try (it is e.g. part of some Delphi kits)

Ivan
prenosil@...
http://www.volny.cz/iprenosil/interbase