>Guessing that you installed the Fb service with a non-default service
>name - "FirebirdServerfirebird3" - because you have another version of
>Firebird running on the same host machine and you want to call instsvc
>from your application to check the status of the Fb3 server process...

Yes I had an old version (FB2) that I uninstalled before maybe not completly.

>I don't know whether this answers your question, though.

Yours answers it's enough for me thank you very much Helen