Help with home screen!

[Air Force]

My neighbor was playing with my Eris today. When I got it back from him my Clock & Weather portion was missing. How do I get this part back onto my phone?

This portion:

 

[Ratchet]

Hold the empty area of your screen where the clock/weather widget was previously residing.
You'll see the widget page appear

Tap "HTC widget"
Tap "clock"
Scroll through the available styles (should be #3 for original).
Tap "select"
You're done.