just think about what you are asking..........
if that were possible, every schmuck with a web server could arbitrarily get any file off your computer they wanted!
the user has to SEND you the file...
if you want to do javascript, where after you paste a list of filenames in a textbox, it would set a bunch of file input fields in a hidden frame with the right values. thats about the only way, and because this isn't a javascript forum you'll have to ask someone else how to do it.