The guide you need is KeithRoss39's guide in General (not stickied; search for 'replacing USB charger board' or do an advanced search on his username). The definitive guide to doing this on here (and probably anywhere else), has the info you need and some.
If it's important enough to cause you grief if it's lost, back it up. No excuses
Trolling for thanks is lame
Does Samsung's auto-brightness implementation crap drive you to self-harm ? A solution !
Failure to search is the leading cause of male impotence on XDA
If you don't know how to recover if things go wrong, what are you doing flashing custom roms ?