In windows 2000
Goto Start >> Programs >> Administrative tools >> Local Security Settings >> Local Policies >> security options >> "prompt user to change password before expiration"
Mostly the default value of your local policy setting will be 14 days.
The requirement for me is :
I want to query this value programatically through SDK api's for both remote domain server as well as your local machine(precedence is for getting the value from remote domain server ).