PAAL 2011 will be held at The Chinese Univeristy of Hong which is approximately 40 kilometers from the Hong Kong International Airport. You can reach the university from the airport by taxi, by airport bus and then taxi,or by airport bus and then Kowloon-Canton Railway (MTR) Train. Details are here
View Larger Map
Below is the map showing the location of the conference site. It is at the Esther Lee Building, just 5 minutes walk from the University Station. During the conference, you can find post-signs from the train station to the buildings.