Greetings......just thought that I would put in my 2 cents worth. The best gloves that I have found are lobster gloves, available at most bike stores, or I got mine through Bike Nashbar (
http://www.nashbar.com/index.cfm).
I rode yesterday, the coldest day yet ( - 4F at 7a.m. with a windchill of -22F). It was a tad nippy, but layering and keep all exposed flesh covered, it wasn't too bad. The tough part was keep cool and not sweating. I wore goggle with vents to keep the glasses clear and fog free.
I agree that layering is the best way to keep warm. Gortex and thermals are the best, breathable, yet able to wick moisture away. Not so many that you'll over heat, but enough to stay warm.
One last point, wear the windbreaker, or windproof jacket
under some type of illuminating outer wear. I got an Illuminite Microweave pullover for Christmas. It's great. It's warm (good with just one or two layers when it's over 15 F) and traffic can see you like a candle!! It's a lifesaver.
Enjoy the winter riding. This is my first winter of riding and I'm loving it. No traffic to deal with, no rude drivers, just odd stares from the blokes who are stuck behind the wheel and don't know what they're missing!!
Be safe and enjoy!!