Specifying file to send in url...

I may be way off base on this, but is it possible to specify a filename on a url as in... The user types in http://server/script.php?filetosend=filename.txt The script.php recieves that file and processes accordingly? Because of the way its specified it would be a GET but I am not sure if this is even possible. Something tells me I have seen this done before but I am not sure. Thanks for any help on this. I have done some Googling and Archive search for something related and have come up blank. -- Tom Don't throw your computer out the window, throw the Windows out of your computer!