the path to the programs executeable on my system is:
/home/user/Programs/Mozillafirebird

Since all I have to do is uncompress and run it, I don't
actually have to install it.  Firebird generates the
files/folders needed based on where it's uncompressed the
first time that's it's run.  Application name is
MozillaFirebird-bin as far as I know.  I use the shell
script to load it though.