UTD is located on Campbell Road, between Waterview Parkway and Floyd Road in Richardson, TX. UTD Campus map can be found in http://www.utdallas.edu/campusmap.html.
ECSS building is at intersection of Rutford and Drive A (see map).
You can get a free visitor parking sticker from the "Visitor Center" (see map) in the Activity Center building at end of University Parkway, park in parking lot J (see map), and walk up to ECSS.
Note that visitors can only park on parking spots marked "Visitor" (painted white) or those that are painted Green. ECSS 4.907 is in the top floor of the building on its western edge (ask for the computer science main office if you get lost). CS Office Phone number is: 972 883 2185.