|I worked it it out with trial and error...|
its this code:
if not exist "%fn%" set /p fn=Plese type in a file name, you may also need to enter the full path if the file isn't in the same directory (this includes the extenion):
Thanks for before M2
Oh one thing, How do you get the batch file to save what is on the screen (batch sreen) onto a txt file?