> I need to detect where a firebird installation is on windows so I can auto copy my UDF there. How can I find this out? It seems to
> have a different location per windows version and/or firebird version.

There can be several Firebird servers installed on single pc, so which one do you want ?
If you know sysdba’s password, try this:

fbsvcmgr.exe localhost:service_mgr user sysdba password masterke info_get_env

Ivan