check out the far north forum, lots of posts about growing fruit in that zone

Very true about checking a forum that is more specific to your question, but this one gets about four times the traffic that the Far North forum does... Most of the gardenweb forums are actually quite dead (I gave up on my Southwest forum many years ago).

In any event, just reading through old posts there should give you plenty of ideas. You'll see right away that Konrad is also in zone 3b.

Personally, I would focus on berries in that climate: blueberries, raspberries, saskatoon berries probably.

Brrr! zone 3 - didn't realize it could get that cold in Vermont.

You might consider Carmine Jewel cherry. It's like tart cherries (i.e. the type used in pies, ever tried them?) except sweeter, and grows more bush-like.

They were bred in Canada in Saskatchewan and are very cold hardy.