I agree with getting a second pair of rims and snow tires and swapping them out in the winter. Plus, you can buy a second pair of "good" rims(17-18 inch) and put summer tires on them and snows on the stock ones, like me. Also sand bags in the trunk help alot too. Best thing is knowing your car. The more comfortable you are with the car the better driver you should be, by knowing the cars and your limits. I used to drive a 944 porsche and now my BMW so rear wheel drive is nothing new to me.
<a href="http://imageshack.us"><img src="http://img217.imageshack.us/img217/3466/quicksignature20te.jpg" border="0" width="600" alt="Image Hosted by ImageShack.us" /></a>