[GTALUG] flash instead of beep in zsh?

Hi folks, I am trying to switch to zsh from bash. Haven't really gotten many of the benefits yet as I need to learn the advanced globbing syntax, but it seems nice so far. However, the beep is driving my crazy. for ages I've had my bash beep set to a flash, which is far less annoying. in zsh this is apparently accomplished with the ZBEEP shell parameter, but I can't make it work. does anyone have ZBEEP set to a value that actually works for them? I should say, I am using GNOME and gnome-terminal, which, unlike konsole, does not have an option for changing the bell to a flash, so I think this would have to be accomplished in the shell itself. Thanks, Matt