Hello everyone, I've just ordered a new power supply and this is going to be my first time replacing a computer part. I need to know: 1. What do I need to know? 2. What do I need to do to avoid frying anything? 3. I'm hearing a lot of people saying that I need to wear an anti-static wrist strap to avoid frying the computer, and also a lot of people saying I don't. Your verdict?