A couple of tips for those of you using a real camera.

1.  Over expose your images a bit.  Your camera will want to underexpose when it sees all that white.

2.  Try to focus on something with contrast.  Most cameras will have trouble auto focusing on a blanket of snow.  If it's a real problem, switch to manual.

3.  Batteries will die faster in the cold.  Have an extra when shooting in frigid temperatures.  If moving between shoots, take the battery out of the camera and keep it in your pocket close to your body to keep it warm.

I hope these tips come in handy the next time you are in a snow storm.  Happy Shooting!