Example app using MVC

I want to make a small application that allows the user to go through XML data thats put in a XML file. To make it more organized and so I can use the code later I also want to use classes and the MVC method.

All I want to have the user interact with is:
A textbox
A back button
A forward button

The app should load up the XML file in an array and display the first line in the textbox, and then the user can go through each line with the forward/back buttons.

I don’t really know where to start though. Help?