Help: Problem Using local Interbase with DB file on a NT Server

Problem Using local Interbase with DB file on a NT Server
When we are using a local interbase engine and try to specify the database
file path on a NT server, we get the message:
    An InterBase error has occurred while attaching.

    Error - Unable to complete network request to host "SERVER".
      Failed to establish a connection.
      System cannot find specified file.

The error happens whether we use the drive mapping (G:) or the complete
server path (\\SERVER\ROOT...) The file exists as we locate it with the
browser fine. If we use a local drive (C:) we have no problems.

Can anyone help?

Thanks in advance.
Jorge
cardin...@mail.telepac.pt