Doesn't sound like you have much experience to drive a RWD sports car in the snow. It's very different from a FWD car due to the diff of weight distribution. In short, be gentle on the throttle. It might help to get your car going from the 2nd gear instead of 1st. Avoid inclines as possible and definitely get some good snow tires. This thread will be helpful for you.
My 370Z in the Snow - Blizzak LM-60