there are only two choices for studded.
nokian W106 hakkapellita (sp?) 700x35
schwalabe marathon winter 700x35
they're both more of a tire designed for on road than off. nokian has better grip in snow, but schwalabe has lower rolling resistance on the road. They both do pretty well on hard pack, but once you hit powder snow or other softer spots, these tires will really suck.
If there was no ice, you could get away with some aggressive CX mud tires.