My Documents path

I trying to point the My Documents path from the default location to a
network drive.
I found a reg key for this and apply it on the logon script for the other
users. But it seems the user need to re-start the machine for the setting to
be recognized by Windows (after they run the script)

Is that an alternative for apply a new My Documents Path or is it a way to
force Windows to recognize the setting at the first time?
[HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Explorer\User
Shell Folders]
"Personal" =