acess 9i db from 8i client

[st2003]

Hi..

I have a local db (Win 2000) with 817 on it and trying to connect to a win 2000 box with Oracle 9i on it..

When i try to connect i keep getting ora-12535. I could ping the box but cant tnsping the instance seervice name.

If I have to append listener.ora with connect_timeout_listener=0, is it the listener on the server or the client? I modified the listener.ora on the server. Bounce the listener and when i tried connecting, it is processing for almost 20 mts and of no use?

Other than this is there anything else i can do..

Thanks, ST2003.