Yes, you aren't too far from Mt. Ascutney, where those channels are located, but there are some hills between you and the mountain. You are going to need a deep-fringe UHF antenna mounted on your roof to see those channels.
You didn't mention how many TV sets you are looking to run from the antenna, but if you are only looking for one TV, and your total cable length won't exceed 75', you can probably get away with an AntennasDirect XG-91 UHF antenna aimed at 235 degrees. I would try it without a preamplifier first, and see how you do, but you may want to consider a preamp if you are going to run more than two TV sets from the same antenna. My choice would be a Channel Master Titan 7777 for this application.
When installing the antenna, use the built-in tilt mounting feature to bring the front of the antenna up about 20 degrees above the horizon to take advantage of the refractive effects of the signals coming off the tops of the surrounding mountains.
http://antennasdirect.com/91XG_HDTV_Antenna.html
http://manuals.solidsignal.com/AntInstallGuide.pdf
http://channelmaster.com/product-ove...ID=74&catID=39
You'll find the antenna more cheaply at
http://www.solidsignal.com