Thanks Ivan,

Yes, the problem was that the service wasn't running. I believed the
control applet when it told me that the service had started, but
actually it only started when I went into services and started it
manually from there. All working now.

Regards,
Jim
--- In firebird-support@yahoogroups.com, "Ivan Prenosil"
<Ivan.Prenosil@s...> wrote:

> > Now when I try to use ib_sql or
> > IBQuery I get the above error message "ISC ERROR CODE:335544375
> > unavailable database" (yes the database definitely exists, I

browsed

>
> The message"unavailable database" does not mean that database file

can' be found,

> but that database server does not run.