Android Customization TutorialMore Like This
Things you need :-
Stable data connection/Wifi
There are 3 methods to this, Flashing a zip theme, a Metamorph theme and T-Mobile Theme chooser. Obviously the Metamorph and T-Mobile theme chooser would be easier, but metamorph is unstable and T-mobile theme chooser is available for Cyanogen Mod 7 atm.
I'd suggest getting some from the Minimalistic or Nature section of dA. Don't get something that's too complicated. It'll be messy. You could get some from UltraLinx or my website too ;)
Dock Icons ;
I get mine from xdaforums but you can get anything you like :)
Use Widgetlocker :) it's ea