I just ordered a Triumph and am trying to learn everything I'll need to know. After reading some threads it seems like most of you have CM7 on your phones. Well....being as tech-savvy as a horse's turd, what is CM7? Do I need it to get the most out of my phone? How do I install it onto my phone? Please...imagine you are explaining this to a 5 year old (at least for the actual installation part). Thank you!!