Unable to locate the settings for Domain Mapping in the Network Settings menu as Super Admin?

Hello,

I've installed the Domain Mapping plugin on a multisite installation per the instructions listed but, when I access the Settings and Network Setting menu I'm not seeing the settings for domain mapping anywhere. I actually went through the install process twice thinking perhaps I missed something the first time. Even after the second install my Super Admin area doesn't show the options under Setting > Network Settings.

I've cleared my browsers cache and I'm not running any caching plugins or anything of that sort -- I'm not sure what I might have missed, any suggestions?

BTW, I've not yet upgraded to WP 3.3.

Thanks