Mount Snow or Okemo.  I don't know the exits, but Ascutney and the other two are right off of I-91.  From Hartford Ascutney is like 1.75 hrs, MS 2 hrs, and Okemo is 2.25.  Have fun, I might be up at Okemo this weekend or next.
Cheers
'You cant get hurt in the air....its when you land that bad things happen'