These detailed directions give you more information than the usual online-generated ones--landmarks, what lane you need to be in, etc. We also have a map for your convenience.

From the North (SH-75)

• When traveling south on North Central Expressway (SH-75) in Richardson, take the Spring Valley exit.
• Go left (east) on Spring Valley.
• At the first traffic light (Sherman), turn right (south). You will pass a traffic light at Buckingham / Prestonwood. 
• Just before Sherman makes a sharp turn to the right, turn left into the parking lot between the two red-brick buildings. (A white sign says "Sherman Business Centre.") We're in the building on the right, about halfway down.

From the South (SH-75)

• When traveling north on North Central Expressway (SH-75) in Dallas, stay in the second lane from the right. At the High Five interchange, that lane splits. Do not take the right-hand (I-635) choice, but continue straight on 75.
• Take the next exit (Midpark). Go past a traffic light at Midpark.
• Take the first available right turn just past a Shell gas station.
• Go to the stop sign (not the yield sign) and proceed east on Prestonwood. (If you do make the sharp turn onto TI Blvd., keep going and turn left at the first traffic light—Sherman—then turn right into the second driveway at the curve (there will be a white sign that says "Sherman Business Centre." We're in the building on the right, about halfway down.)
• On Prestonwood, at the first traffic light (Sherman), turn right (south).
• Just before Sherman makes a sharp curve to the right, turn left into the parking lot between the two red-brick buildings. (A white sign says "Sherman Business Centre.") We're in the building on the right, about halfway down.

From the East (I-635)

• When traveling west on LBJ Freeway (I-635) from Garland, take the Greenville Ave. exit.
• Turn right at Greenville.
• Pass traffic lights at Amberton and at Restland Road.
• Turn left at the third traffic light (Buckingham).
• Turn left at the first traffic light (Sherman).
• Just before Sherman makes a sharp turn to the right, turn left into the parking lot between the two red-brick buildings. (A white sign says "Sherman Business Centre.") We're in the building on the right, about halfway down.

From the West (I-635)

• After passing the Preston exit, you should be in the second lane from the right (marked for SH-75 North to Sherman).
• Go up onto the High Five interchange. It will curve to the left and put you on North Central Expressway (SH-75), heading toward Sherman.
• Take the first exit (Spring Valley). As soon as you can, move to the right lane.
• Take the first available turn to the right (Prestonwood), just past a Shell gas station. Note: If you miss the Prestonwood turn, go on to Spring Valley, take a right, and then follow the directions below for approaching from the west on Spring Valley.)
• Go to the stop sign (not the yield sign) and proceed east on Prestonwood. (If you do make the sharp turn onto TI Blvd., keep going and turn left at the first traffic light—Sherman—then turn right into the second driveway at the curve (there will be a white sign that says "Sherman Business Centre." We're in the building on the right, about halfway down.)
• On Prestonwood, at the first traffic light (Sherman), turn right (south).
• Just before Sherman makes a sharp turn to the right, turn left into the parking lot between the two red-brick buildings. (A white sign says "Sherman Business Centre.") We're in the building on the right, about halfway down.

From the West (Spring Valley)

• When approaching North Central Expressway (SH-75) on Spring Valley, stay to the right. (The left lane goes into a tunnel under 75 from which you will not be able to turn right onto Sherman.)
• At the first traffic light (Sherman) after SH-75, turn right (south). You will pass a traffic light at Buckingham/Prestonwood.
• Just before Sherman makes a sharp turn to the right, turn left into the parking lot between the two red-brick buildings. (A white sign says "Sherman Business Centre.") We're in the building on the right, about halfway down.