(Piked from Greg Dudek with suitable substitutions for yours truly)
My office is on the 4th floor of the McConnell Engineering Building (Room 441 to be precise) in the Center for Intelligent Machines. You'll find my lab across the corridor (444) - just follow your nose to the expresso machine. The McConnell building is at the East edge of the main campus, a city block North of the main entrance (the Roddick Gates), at the corner of MILTON and UNIVERSITY streets. McGill is North of Sherbrooke Street and West of University Street.
Sherbrooke is Montreal's main East-West Street. University is a major downtown North-South cross street.
The closest subway (metro) station is the McGill stop. The University is about 3 blocks North of the metro stop.
The list of links below should provide additional information on the city.