I live in suburbs north of Boston (about 30 minutes from the city), so I can't find anything local, I already trolled through my town and found nothing. Don't know Boston well enough to have a clue where to look.
Western MA? You have the last CompUSA out in Holyoke.
Edit:
Thinking of Holyoke reminded me to check CompUSA's site; there's a location in Salem NH. I might try going there.