Скажите как исправить?
В XP работает нормально, а в Windows 7 x64 не работает

public void setIP(string IPAddress,string SubnetMask, string Gateway) 
{ 
 
ManagementClass objMC = new ManagementClass(
    "Win32_NetworkAdapterConfiguration"); 
ManagementObjectCollection objMOC = objMC.GetInstances(); 

 
foreach(ManagementObject objMO in objMOC) 
{ 

      if (!(bool) objMO["IPEnabled"]) 
           continue; 


 
      try 
        { 
          ManagementBaseObject objNewIP = null; 
          ManagementBaseObject objSetIP = null; 
          ManagementBaseObject objNewGate = null; 

          
          objNewIP = objMO.GetMethodParameters("EnableStatic"); 
          objNewGate = objMO.GetMethodParameters("SetGateways"); 
          


          //Set DefaultGateway

          objNewGate["DefaultIPGateway"] = new string[] {Gateway}; 
          objNewGate["GatewayCostMetric"] = new int[] {1}; 
          

          //Set IPAddress and Subnet Mask

          objNewIP["IPAddress"] = new string[] {IPAddress}; 
          objNewIP["SubnetMask"] = new string[] {SubnetMask}; 
          
          objSetIP = objMO.InvokeMethod("EnableStatic",objNewIP,null); 
          objSetIP = objMO.InvokeMethod("SetGateways",objNewGate,null); 


          
          Console.WriteLine(
             "Updated IPAddress, SubnetMask and Default Gateway!"); 


        
        } 
        catch(Exception ex) 
        { 
              MessageBox.Show("Unable to Set IP : " + ex.Message); } 
        }
}