Which value is for the Account Policy in the registry ?

I'm using Windows NT 4.0 and I need to use API to modify  the Account Policy of default option " No Account Lockout" to Account Lockout ".

My question is which registry value is releated to the Account Policy and how can I identify the data that represent the "No Account Lockout" AND" Account Lockout" option.

Ps
To go to Account Policy :
Go to Administrative Tool -> User Manger( On the menu bar select Policies followed by Account )



taleeAsked:
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y96andhaCommented:
Go to http://premium.microsoft.com/msdn/library/sdkdoc/f64_54c4.htm

and check out the structure  USER_MODALS_INFO_3
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taleeAuthor Commented:
Sorry, this is not what I want. What I want is to set the "No Account Lockout" option to "Account LockOut" and the " Lockout duration" is set to forever until administrator unlocks the account.The structure USER_MODALS_INFO_3 doesn't allow me to set the Lockout duration to what I want.So I need to know the value for the ACCOUNT POLICY in the registry.
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y96andhaCommented:
You are wrong. You can set the usrmod3_lockout_duration to TIMEQ_FOREVER to make accounts locked out forever until administrator unlocks the account. The registry values are protected; you cannot change them directly.
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taleeAuthor Commented:
Sorry, I still not very clear and can't get my program to run.Can you please be more specific and show me an example on how to use the structure.
Thank You.
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y96andhaCommented:
Here is an example. First the current values are read out, then the new values are set. This turned out to be lots of work for not many points.


                USER_MODALS_INFO_3 *umi3;
                DWORD status;
      status=NetUserModalsGet(L"\\\\ANDREAS",3,(LPBYTE*)&umi3);

      if(!status) {
            wprintf(L"%d %d %d\n",umi3->usrmod3_lockout_duration,
                  umi3->usrmod3_lockout_observation_window,
                  umi3->usrmod3_lockout_threshold);
            NetApiBufferFree((LPBYTE)umi3);
      } else
            wprintf(L"Error: %d",status);
      
      DWORD parmerr;
      DWORD status2;
      USER_MODALS_INFO_3 umi3b;
      umi3b.usrmod3_lockout_duration=TIMEQ_FOREVER;
      umi3b.usrmod3_lockout_observation_window=300;
      umi3b.usrmod3_lockout_threshold=5;
      status2=NetUserModalsSet(L"\\\\ANDREAS",3,(LPBYTE)&umi3b,&parmerr);
      if(status2)
            wprintf(L"Error: %d",status2);

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