Hi Blitzkrieg101,
In XCode 4.2 drag a new view into your storyboard and select Edit > Embed In> Tab Bar Controller. Then create a segue (Ctrl + click + drag) from your button on the initial view to the grey tab bar view. Repeat the process for each tab in the tab bar view linking it to the view you want it to lead too. To keep a view as your initial view there is a tick box in the attributes/identity inspector (i'm @ work can't remember which) and having this checked means there will be an arrow at the side of that view marking it as your initial view.
I have a tutorial loaded up at
http://www.robinsonsintelligence.com...ontroller.html on using tab bar controllers and if it & my comments above don't help, leave a comment and i'll add a new section to the bottom of it.