I understand the idea behind root. Things I don't get and cannot glean from reading the "all things root" threads: What the heck is a ROM? How many are there? (I won't ask which is better because I think I know the answer is varied) Do I really need a new ROM? What is wrong with the one I have (Stock)? Back-up before rooting? Kernals? Nandroid backup? Command line? SDK? There is a lot of "geek speak" in these "simple" root threads that really make feel like an idiot. I have had my eris for over a year now and want to improve the lag on the dialer, and maybe overclock it. I would like to keep sense UI if at all possible. It seems all of the tutorials make assumptions at some point that the reader knows what all of the terminology means.