From the East:

Take the Mass Pike I-90 West to Marlboro/Framingham Exit (Exit 12). Follow the signs to Marlboro.
You will eventually be on Route 85.
You will pass a reservoir on your right.
Follow Route 85 toward Hudson.
340 Maple street will be on your right after you pass through a set of lights.
It is next to a Commerce Bank. Take the elevator to the 4th floor.

From 495:

Take Route 495 to the Marlboro/Route 20 East Exit.
As you come off the ramp you will turn right, heading toward downtown Marlboro.
Go through the downtown area, and stay right towards route 85.
Continue on 85 south and you will pass a McDonalds and Dunkin Donuts.
340 Maple street is on the left hand side next to Commerce Bank. Take the elevator to the 4th floor.