Hi, I came across this program, called 'Where Is M13' (runs on Java - free download). Its free in a light version, and displays the location of all the Messier objects from a viewpoint outside our galaxy. The download is for the full version of 600 odd deep sky objects, effective for a 7 day trial, after which the program reverts to a light version displaying Messier objects only. You can check it out at
http://www.thinkastronomy.com/M13/common/download.html
Have fun, Mark
