> > Where to copy fbembed.dll ?
>
> briefly:
> if you do not use charsets and collates (uh, maybe only collates).

you can

> put the embedded dll structure along with the application jar
> if you use collates (and maye charsets) you should put the directory
> structure along with the java.exe used to launch the app... this

force you

> to include a jre with your app.

I have installed in C:\Program Files\Java\j2re1.4.2_04\bin :
fbembed.dll
fbclient.dll (since it's not clear what name to use - same file)
firebird.conf
firebird.msg
intl\fbint.dll
udf\fbudf.dll
udf\fbudf.sql

> double check that you're including the correct firebirdsql jar (1.5) and
> not the older (1.0).

I launch my application with :
java -classpath "%javadir%\lib\firebirdSQL\firebirdSQL-full.jar" ...

where firebirdSQL-full.jar is from "FirebirdSQL-1.5.0RC3JDK_1.4.zip"

But it still doesn't work (same message)