Check out White rocks National Recreation Area....
Hope these links help!
http://www.appalachiantrail.org/hike/trail/vermont.html
http://www.vtliving.com/camping/sout.htm
http://www.fs.fed.us/r9/gmfl/recreation%20management/wildarea/bigbranc.htm
I used to camp, hike,fish, and whatnot when I was in college in VT. White Rocks are about 20 min. away from the Killington access road and is worth checking out. Bring a camera!