Can not connect to PC. Only battery charge

Didn't know about the microsoft sync thing, but I have sync'd via bluetooth. For me, updating isn't a problem at all. I sync'd very recently so all my stuff is already on my computer.

My biggest question is whether I need to flash a stock rom before I bring it in to USCC. There seems to be some debate about it from people on both sides who are equally passionate. I suppose if I can get it to connect by chance, I might as well flash the stocker. eh? Or don't I even need to worry about that with USCC?