Filesystem working like a physical drive

From: sean frankel (nospams_at_heaven.com)
Date: 05/30/04 

Date: Sun, 30 May 2004 19:21:30 +0300

Hi,

I am looking for a single filesystem which I can open, edit and save a
file within, without using a temp file. For example, lets say there is
a x.doc file in my filesystem. Somehow I want to "shellexecute" it to
Word and when user saves it, I want the file modified as well.
Pointers?

Sean