I’ve so far discovered two useful sites which help you track sattelites. We saw the ISS last night. steady, bright unmissable, exciting and over in 2 mins.

one is http://www.heavens-above.com

and the other is http://www.n2yo.com/

there is also this java application from nasa too which even does a little sky map for you as pictured above.

http://science.nasa.gov/Realtime/JPass/20/