I am using launcher pro so I can only change the dock icons and that was easy to do, long press a dock icon then select change icon/custom icon/for me it open my gallery and then I select the icon that I like.
This is how my home screen looks like. I have weather, phone dialer, app drawer, text messages, then email.
-The time widget is called TypoClock check out my previous post on it for full info
Hope it helps and enjoy.