On this site we have the following: DaKine full finger, not really warm
But the following sound best for you: Cold weather Gloves

Sailing Angles make great gloves, but I have never tried these:
Sailing Angle Neoprene backed

And Thunderwear has the following:
Thunderwear full neoprene

Or just look at the directory.., there are any number of products that might do the job.

Glove Directory Page

Good luck,
Rick