WAFile or link to file

Hi,

I have a problem with  WAFile, upload/download files.

Of course i know this link : http://book.seaside.st/book/fundamentals/forms/fileupload
but in my project I have to import/export all the datas and files and so I lose my WAFile objects

So, is it possible to create a WAFile without the web interface (so without html uploadFile)

or

do you know how to make a link to an existing file on the server.

can you help me ?

best regards

Renaud Vilain