A browser connects to a port (usually 80). If that executable is listening on one, you can use it. It's technically not impossible for an executable being both daemon and plain shell app, depending on the call, but I doubt you have that. Ofcourse there is also the matter of completly handling HTTP headers, since the webserver normally does... You'll always need a webserver to connect to, even if your script is the webserver itself.

Greetz
Beatnik
... Quidquid perl dictum sit, altum viditur.