>I am using delphi 2009, an firebird 2.1
> when using the IBDatabase component and connecting to the firebird
> embedded dll, I am getting division by zero.
> I checked the documentation and it seems as if there was a problem
> like that in previous versions of the embedded firebird..
> Seems that the gds32.dll of the embedded is not fully compatible with
> the Interbase dll interface.

Seems you have wrong error message

> How can I fix that?

Does you have correct firebird.msg in applicaiton folder ?

Regards,
Vlad