"Can anyone recommend a good heavy windproof glove that will actually keep hands warm? Freezing fingers are enough to make me give up winter commuting unless I can solve this problem."
I had apair of North Face "technical" gloves that I purchased at an outdoor sports specialty store that worked suprisingly well for me last winter. I did not ride in weather below about 30F though. As I recall they had these gloves in several different temperature ranges.
It may have been these:
http://www.thenorthface.com/opencms/...dc=0C5,001,163