Mac OS X: How do I disable SSID Broadcasting with Internet Sharing over Airport?

Mac OS X: How do I disable SSID Broadcasting with Internet Sharing over Airport?

I'm currently using Internet Sharing from my Ethernet over Airport on my Macbook Pro, however I don't want my SSID broadcasted†. There doesn't seem to be an option in Sharing/System Preferences to hide my ssid or prevent broadcasting. Any ideas?