Thank you for helping, for some reason it will not let me choose the quicktime format???? i do have quicktime installed.
I have just rendered using the windows media 720p hd setting using the microsoft media 9 encoder, it has come out exactly as it looks in AE CS4 and looks amazing.
Just have to see now how well the file transports into other applications.
I am curious though why i cannot choose the quicktime option???