Website Text Based League/Ladder

I am after a website coded in either PHP or C+/.Net The website will be a text based league ladder system, based around an Xbox 360 Game. The website should allow one or more leagues to be added and/or customized through an Admin panel. The website should utilise a mini admin portal for Managers of clubs. The website should make use of a shoutbox, (similar to Ajax shoutbox) to allow users to post topics. Similar websites; [login to view URL] [login to view URL]