Hey, I've had my iPhone since second week after it came out but I've been avoiding "hacking" it. I'm worried about warranties and the like. I've decided that there's too much cool stuff to keep my iPhone running just stock, I really want to load up some NES games 
Where do I start, what programs do I need, how time consuming is it and how much damage could I potentially due to the phone?
Thanks in advance.
-Janik

Where do I start, what programs do I need, how time consuming is it and how much damage could I potentially due to the phone?
Thanks in advance.
-Janik