Please can you answer me this question?

1. What happens with your installation if already a FB server is
running on the system and it is configured to an other port than you
expect?

2. What happens if already a IB server is running?

3. How can you configure your users inside your application on a
server with an already installed FB-Server which has changed the
SYSDBA password (by an application who initialy installed the server)?

This are the problems which makes me nervous.

Regards
Rolf