Sets the user's password to a specified value.
HRESULT IADsUser::SetPassword(
  BSTR bstrOldPassword,  //The old password
  BSTR bstrNewPassword,  //The new password
);
 This method supports the standard return values E_FAIL and E_UNEXPECTED, as well as the following:
  Windows NT:  Use version 4.0 and later. 
  Windows CE:  Unsupported.
  Header: Declared in iads.h.