MVC 4 Web API XML Documentation Generator?

I have an ASP.NET MVC Web App developed in C#. I currently have API functions scattered all about, but commented using the standard C# XML schema. I'm looking for some tool that will allow me to create a semi-interactive API documentation page. I've looked into Swagger - which looks great - but I couldn't figure it out for the life of me. I also tried ApiExplorer ( http://blogs.msdn.com/b/yaohuang1/archive/2012/05/... ), but that only grabbed info from ApiController (which looks like a built in class), rather than functions from my actual app. I'm desperately looking for any tools that people know of that are capable of taking my RESTful functions with XML comments and create a friendly API gui documentation schema. I've had zero luck finding anything.

Something similar to Swagger ( http://petstore.swagger.wordnik.com/ ) that a simpleton such as myself could understand how to implement would be awesome.

If you don't know of anything that specific, just anything that can parse XML comments from code and display an HTML/JavaScript/whatever rendition of each function would still be amazing.

Innumerable thanks to anyone who can help me.