IDOC TO FILE SETTINGS

hi all

I am doing idoc to file scenario. can any one tell what is the basic requirements and what is the basic ale settings need to be done.

How can i see the Successful message. how can i send the idoc to the xi without we19. i.e., as soon as the idoc is created in my r3 system then the file is generated in my receiver system. is it possible ...

it is very urgent requirement

help me please

Vasu