UITabBarController Not Appearing in View

Hi, I started out with the utility application as the template.

Trying to add a UITabBarController to the flipside view.

in the flipsideviewcontroller.h, I declared:

UITabBarController *tabBarController;
@property (nonatomic, retain) IBOutlet UITabBarController *tabBarController;


synthesized it in the .m


and added

Code:

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor viewFlipsideBackgroundColor];  
    

	
	pickerArray = [[NSMutableArray alloc] init]; 
	[pickerArray addObject:@"Manage Inventory"]; 
	[pickerArray addObject:@"Order Parts"]; 
    [pickerArray addObject:@"Blueprints"]; 
	
	
	[window addSubview:tabBarController.view];
	[window makeKeyAndVisible];
	
		
	
	
	
}

I created 2 additional view controllers:
FirstTabViewController and SecondTabViewController
Made one red, one blue

Opened up my flipside .xib


Added a uitabbarcontroller to the box
changed class and nib of tab 1 to firsttabviewcontroller and class/nib of tab 2 to secondtabview controller

And connected file's owner to the UITabBarcontroller

Is this right?

Appreciate the help