Norris Center - Westchase is at 9990 Richmond at the NE corner of Richmond and Briarpark, about 1/2 mile East of Sam Houston.  Cross Briarpark and turn left at the 9990 building entry from Richmond.  Drive straight into the parking ramp and follow the (overhead) signs to the roof, which is where Norris has parking.  When you get to the roof park close to the elevator enclosure and take the elevator down (from 3rd floor) to first floor (there is also a stair in the elevator enclosure).  On the ground level come outside and look to your left to see the bright blue Norris canopy.  The Norris Center conference rooms are straight down the hall from this entry.  When leaving, return to the third floor of the parking ramp and follow the arrows on the pavement to exit (there is one place that is not well marked, so just remember to turn right anywhere there are no arrows).