How to write code to get focuse the application which is open from server

[vinthan]

hi,
I am new to python. I have to write test cases in python. An
application is open in the desk top ( application writen in .Net) I
have to write code to get focuse the application and click on the link
which in the one side  and it will load the map on the other and I have
to check map is loaded. Any one tell me how do I use Dispatch or any
other method to write a code.