Writing .net scripts

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using GTA;

namespace tutorialScriptVS
{
   public class tutScriptVS : Script
   {

       public tutScriptVS()
       {
           //set interval
           Interval = Settings.GetValueInteger("INTERVAL", "SETTINGS", 10000);

           //bind tick event
           this.Tick += new EventHandler(testTick);

           //bind keydown event.
           this.KeyDown += new GTA.KeyEventHandler(testKeyDown);

           //bind phone
           BindPhoneNumber("FIB 555 0100", new PhoneDialDelegate(callHandle));

       }

           //tick method, ran every 20 secs
           public void testTick(object sender, EventArgs e)
           {
               //set health and amour
               Player.Character.Health = 1000;
               Player.Character.Armor= 1000;

               if (Player.Character.isInVehicle())
               {
                   //repair
                   Player.Character.CurrentVehicle.Repair();
                   //wash
                   Player.Character.CurrentVehicle.Wash();

               }

           }

           //key down handler
           public void testKeyDown(object sender, GTA.KeyEventArgs e)
           {
               if (Keys.Q == e.Key)
               {
                   //get position to put vehicle
                   Vector3 vehPos = Player.Character.Position.Around(10.0f);

                   //create vehicle
                   World.CreateVehicle(new Model("ANNIHILATOR"), vehPos);
               }
           }

           public void callHandle()
           {
               //get position on street near player
               Vector3 vehPos = World.GetNextPositionOnStreet(Player.Character.Position.Around

(10.0f));
               //create vehicle
               World.CreateVehicle(new Model("FIB"), vehPos);
           }

   }
}