title: oAuth/MGTwitterEngine change user for the iPhone?
body: <p>I'm working on a twitter app for the iphone using oAuth/MGTwitterEngine
  The source it's based of is here: <a href="http://icodeblog.com/wp-content/uploads/2010/09/iCodeOauth.zip" rel="nofollow">http://icodeblog.com/wp-content/uploads/2010/09/iCodeOauth.zip</a></p>
  
  <p>But I want the user of the app to be able to go back and change the username and password if for an example the user has more than one twitter account.</p>
  
  <p>Is it possible to give a button an action to open up the page that opens automatically the first time the app is opened. (The sign in page)</p>