The spider was about the size of a nickel, and the legs wasn't the bright of an orange, all I want too know is what is it and is it poisonous?

All spiders have a venom. Whether it is dangerous to humans depends on several factors: the toxicity of the venom, the site of the bite, and the amount injected being the most important.

As to which species of spider it was, what part of the world do you live in? North American spiders are seldom found in Europe or Australia and vice versa.