Since more peeps are programming the spheros, here's the quick rundown.
Download MacroLab from your app store.
Connect to your sphero (bluetooth)
Open MacroLab
click on the SQUARE Macro
Figure out what the commands do (hit, the ... are just explanations/comments)
Ok, now go BACK and make a new MACRO
(CLICK add, and name it whatever, perhaps "chariot"???)
EDIT, read the instructions, then ADD a ROLL Command
CREATE, aim the back, and play.
Rinse and repeat, and modify until it does what you want...!