It doesn't work without altering every gib file to big, you are supposed to install shockwave in your main ZH directory.
Edit: Also, be sure to open the game via the normal zero hour exe file, otherwise all the big files you edited will reverse back to gib. Better yet, delete the desktop icon for shockwave entirely to avoid this.
NODBrother
Vinnie joined
vigiojames are best method against deep eression.