Planning to build a computer but since my house is mostly carpeted I think it be best to buy an anti-static wrist strap. I heard that you can attach the alligator clip to your case but it has to be unpainted and the problem with that is that my whole case is painted black. I also heard that you can attach the clip to your power supply while having it in your case and having it plugged into a wall outlet but the psu must be turned off. Where exactly should I connect the strap to? I'm sure I'm over-complicating a simple problem but I want to make sure I don't fry my parts.