You should not be at too much risk, personally, I have never used an antistatic wrist strap or gloves while building my own pc's. Had very few problems. Mainly, do it preferably not on carpet, but if you, you'll be ok I think, just your main thing is to make sure you touch an unpainted part of the case, which will give you some ground, and keep touching that from time to time, and don't move/shuffle around. But that said, the gloves I don't think would be necessary, but a wrist strap would not be a bad idea. I recently got a tech job, and you'd be suprised how much damage ESD can really cause.