Scriptto log off and pop up a msg

Hi All,
I need to write a script which has the requirements as below.

1,It should log out the particuler user from windows at a particuler time ,say 6 o'clock in the evening everyday,At the same time it should not log off other users.Say, if A and Bare the users ,then only A has to be loggef off .Also it should display an alert window before logging off.

Following pop up msg has to be displayed ''you are going to log off ,plz save your work'.

2,or it should log off each user at 6 o'clock in the evening everyday ,before loging off it should ask the user whether you want to continue or not.He should have an option to continue.

plz help me, in oder to solve it.Be it any scripts....

re: Scriptto log off and pop up a msg

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