You can pass GSEC all parameters at once so you don't have to enter
interactive mode.

Example:

To modify a user's password:

Change password of ELVIS to "MyKey37":
gsec -user SYSDBA -password masterkey -modify elvis -pw MyKey37

This is one call and GSEC will return after that without entering its
interactive mode.

You can get more info about GSEC here:
http://www.destructor.de/firebird/gsec.htm

You don't need any DB components for calling that, just a simple
WinExec or ShellExecute.

Best Regards

Stefan

> Maybe this is easier than expected, I have not yet tried, but calling
> gsec is not only invoking a program with params, it is calling gsec
> with input params (sysdba user and password) and then calling the
> modify function with new params (i.e username, changed password).

> As for the components I use DBExpress for data access and would
> prefer not to involve new component suites, like IBObjects.