Why are you linking people to guides on other sites ?
It's a bit hard for other people here to help this person with that method if they get stuck (as if you're going to be around 24/7). I'm certainly not even going to look at anything related to rooting on another site for that reason, plus chances are the information has been lifted from here anyway.
There is a wealth of information on this subject on this site, please refer people to that in future rather than info off site for such a basic query.
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 ?