cocoa demo

I would need a small demo on how to switch from a iuview or splitview to a glview. So basically what I want the demo to do is: - When it start you show a uiview / spliview with a button - when you click the buttons you move to the glview, use the sample eaglview from xcode with the cube boucing. - do a small write up with screenshoot on how you achieve it.