1)get
properties of one file or folder, via right click it
2)Go inside into advanced security settings, via click
advanced button on
security tab.
3)Choose
owner tab, and then using
edit button.
4)Choose one user, after ok clicked, you would get the screenshot like this:
5)Close all properties, via click ok.
6)Re-do 1st step
7)Re-do 2nd step
8)Choose
permissions tab, and then using
edit button.
Remove the user unused;
Add the user needed;
Edit the user needed;
http://www.aygfsteel.com/Files/crazycy/permit_winsta/windows_permit.doc