I know that we can open the map and set the direction from source to destination by using the following URL:
http://maps.google.com/maps?saddr=23.4444,72.44445&daddr=23.55555,72.55555
But I noticed that this URL only works in iPhone and Android.
I wonder what is the syntax/codes that can be used to launch the map app in WP7 or BlackBerry with the direction shown on the map.