I am recently got a dSLR, d70s, and its that time of year where its starting to get cooler and maybe even start snowing. I was just wondering if there are anythings that I should avoid, be careful of, or watch for if I do any shooting out in the colder weather (moisture, sudden changes of temp, too cold temps). I am a skier and would like to be able to do some shots of that or other winter/snow shots, but don't want to end up wrecking my camera or lenses, or having shots not turn out. Any advice is greatly appreciated. Thanks much in advance.

Phil