Disable Map Network Drive



I have set Disable Map Network Drive in the group policy of ADS domain and it
works fine. But when the user logs in with the login script which contains
net use commands to map network drive, the drive gets mapped. how can I
disable this?
My requirement is:
1. The users should not be able to map netowrk drives thru Net Use command
2. Network drives should not get mapped even though they are defined in the
login script.

Thank You
.