OraAgent/TNSListener will not start anymore

We run Ora8 on an NT machine. After reconfiguring the machine (previously in a peer to peer network, now in a NT domain network - We changed the machines hostname and IP address) the Agent and TNS Listener services will not start anymore, the error message says ORTRACE80.DLL not found in path....
the dll, however is located in the given path... thanks for any ideas! Received on Fri Aug 21 1998 - 15:02:12 CDT