I personally have never tried firebird with 64 bit windows ....
Can you open the sample databases that come with Firebird?
If so, then what you might need to do is open up remr.fdb under a 32 bit version, create the transportable backup file from it i.e. remr.fbk ( using gbak), and then restore that on the 64 bit system.
The ODS might be different ...
Graham Chiu
Beta Downloads and Documentation Wiki