Windows service og Timer

Hej Experter,

Jeg er ved at lave en windows service som hvert 10'ende sekund skal tjekke om der sidder noget i drev G. Men jeg har lidt problemer med at se hvor jeg skal placere timeren for at den bliver kørt?

Her er min kode:

public Service1()
        {
            // This call is required by the Windows.Forms Component Designer.
            InitializeComponent();

            // TODO: Add any initialization after the InitComponent call
            if(!System.Diagnostics.EventLog.SourceExists("DoDyLogSourse"))
            {   
                System.Diagnostics.EventLog.CreateEventSource("DoDyLogSourse","DoDyLog");
            }

                eventLog1.Source = "DoDyLogSourse";
                eventLog1.Log ="DoDyLog";
           
        }

        // The main entry point for the process
        private static Random rng = new Random();
        static void Main()
        {
            System.ServiceProcess.ServiceBase[] ServicesToRun;
           
            // More than one user Service may run within the same process. To add
            // another service to this process, change the following line to
            // create a second service object. For example,
            //
            //  ServicesToRun = New System.ServiceProcess.ServiceBase[] {new Service1(), new MySecondUserService()};
            //
            ServicesToRun = new System.ServiceProcess.ServiceBase[] { new MyNewService.Service1()};
            System.ServiceProcess.ServiceBase.Run(ServicesToRun);
           
            Timer t = new Timer(new TimerCallback(Test), null, 0, 10000);
            while(true) Thread.Sleep(10);           

        }
        static void Test(Object o)
        {
        Thread.Sleep(rng.Next(10) * 1000);

            FileStream fs = new FileStream(@"c:\skriv.txt" , FileMode.OpenOrCreate,    FileAccess.Write);
            StreamWriter m_streamWriter = new StreamWriter(fs);
            m_streamWriter.BaseStream.Seek(0, SeekOrigin.End);            

            if (Directory.Exists("G:\\"))
            {
                m_streamWriter.WriteLine("G mounted "+ DateTime.Now + "\n");
            }
            else
            {
                m_streamWriter.WriteLine("G unmounted "+ DateTime.Now+ "\n");
            }
            m_streamWriter.Flush();
            m_streamWriter.Close();
            fs.Close();

            /*Process myProcess = new Process();
            myProcess.StartInfo.FileName = "notepad.exe";
            myProcess.Start();*/
        }
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.eventLog1 = new System.Diagnostics.EventLog();
            ((System.ComponentModel.ISupportInitialize)(this.eventLog1)).BeginInit();
            //
            // eventLog1
            //
            this.eventLog1.Log = "DoDyLog";
            this.eventLog1.Source = "DoDyLogSource";
            //
            // Service1
            //
            this.ServiceName = "USB Viruskontrol";
            ((System.ComponentModel.ISupportInitialize)(this.eventLog1)).EndInit();

        }