Thanks Lester and Helen for your replies:
[...]

> >With no test access to boxes with the other OSes listed above I am

wondering

> >if I can tell a prospective user that can use my app with a, for example,
> >AIX DB server?
>
> AIX is UNIX so there shouldn't be any problem just using the POSIX path
> format. Same physical restrictions apply.
>
>

[...]

> >Will IBO connect to them and if so what is the form of IBO's connection
> >string?
>
> Actually, it's not "IBO's connection string" but "the client connection
> string". The connection string is determined by the server OS. For
> Firebird currently, you have only the two to know about, Windows and

POSIX.

>

OK, so I should think IBO imposes no connection string requirements of its
own and the connection string requirements are from IB/Firebird and server
file systemt?

> You'll get first-hand tips by asking your question on ib-support...
>

I will do that.

Thanks

Russell