Wow. The amount of dangerous, life-threatening information/advice being given here is absolutely breathtaking (pardon the [grim] pun).
Even if you're a bit handy, do NOT go into an electrical job like changing an outlet without at least a little prior education!!!! Either read one of those DIY electrical books that they sell at Home Depot, or maybe look up some videos online... but do NOT try to "wing it" and "figure it out" as you go along. It's not just about the danger of getting shocked; even if you survive installation, an improperly connected wire can cause tiny sparks that can cause the whole house to catch fire, CH"V... and it can happen YEARS later.