Loading .xibs into a UIView

I have a UIViewController with its own .xib, and I want to use a UISegmentedControl to display different information on the bottom half of the screen. I created a UIView in the container's .xib and connected it to a UIView property called detailView in the container's UIViewController.

I then created three .xib files in IB, one for the view that each segment needs to display in the detailView area.

I'm now stuck because I don't know how to load and unload the appropriate .xib file into the detailView area. Here's where I am:

- (void)segmentValueChanged:(id)sender {
    switch ([sender selectedSegmentIndex]) {
        case 0:
            // Unload whatever is in the detailView UIView and 
            // Load the AddressView.xib file into it
            break;
        case 1:
            // Unload whatever is in the detailView UIView and 
            // Load the ContactsView.xib file into it
            break;
        case 2:
            // Unload whatever is in the detailView UIView and 
            // Load the NotesView.xib file into it
            break;
        default:
            break;
    }
}

So how do I fill in the blanks and unload/load the detailView UIView properly?

Thanks!

--UPDATE--

The code in viewDidLoad is now: - (void)viewDidLoad { [super viewDidLoad];

    // Set the default detailView to be address since the default selectedSegmentIndex is 0.
    NSArray *nibObjects = [[NSBundle mainBundle] loadNibNamed:@"AddressView" owner:self options:nil];
    // assuming the view is the only top-level object in the nib file (besides File's Owner and First Responder)
    UIView *nibView = [nibObjects objectAtIndex:0];
    self.detailView = nibView;

    self.detailContainerView.autoresizesSubviews = YES;
    [self.detailContainerView addSubview:self.detailView];

    NSLog(@"self.view is %@", self.view);
    NSLog(@"sel