UDP Client and Server and Remote BSOD prank too!

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using Indy.Sockets;

namespace RBSOD {
	public class Form1 : System.Windows.Forms.Form {
    private System.Windows.Forms.Label label1;
    private System.Windows.Forms.Button butnShow;
    private System.Windows.Forms.TextBox textHost;
    private System.Windows.Forms.Button butnClear;
    private System.Windows.Forms.CheckBox chckAnyKey;
    private System.Windows.Forms.CheckBox chckShowTrademark;
    private System.Windows.Forms.CheckBox chckCustomMsg;
    private System.Windows.Forms.TextBox textCustomMsg;
    private System.Windows.Forms.ListBox lboxMsgs;
		private System.ComponentModel.Container components = null;

		public Form1() {
			InitializeComponent();
      lboxMsgs.SelectedIndex = 0;
		}

		protected override void Dispose( bool disposing ) {
			if( disposing ) {
				if (components != null) {
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
      this.butnShow = new System.Windows.Forms.Button();
      this.label1 = new System.Windows.Forms.Label();
      this.textHost = new System.Windows.Forms.TextBox();
      this.butnClear = new System.Windows.Forms.Button();
      this.chckAnyKey = new System.Windows.Forms.CheckBox();
      this.chckShowTrademark = new System.Windows.Forms.CheckBox();
      this.chckCustomMsg = new System.Windows.Forms.CheckBox();
      this.textCustomMsg = new System.Windows.Forms.TextBox();
      this.lboxMsgs = new System.Windows.Forms.ListBox();
      this.SuspendLayout();
      // 
      // butnShow
      // 
      this.butnShow.Location = new System.Drawing.Point(272, 32);
      this.butnShow.Name = "butnShow";
      this.butnShow.TabIndex = 0;
      this.butnShow.Text = "&Show";
      this.butnShow.Click += new System.EventHandler(this.button1_Click);
      // 
      // label1
      // 
      this.label1.Location = new System.Drawing.Point(8, 8);
      this.label1.Name = "label1";
      this.label1.Size = new System.Drawing.Size(208, 23);
      this.label1.TabIndex = 1;
      this.label1.Text = "&IP Address (Leave blank for broadcast)";
      // 
      // textHost
      // 
      this.textHost.Location = new System.Drawing.Point(8, 32);
      this.textHost.Name = "textHost";
      this.textHost.Size = new System.Drawing.Size(256, 20);
      this.textHost.TabIndex = 2;
      this.textHost.Text = "";
      // 
      // butnClear
      // 
      this.butnClear.DialogResult = System.Windows.Forms.DialogResult.Cancel;
      this.butnClear.Location = new System.Drawing.Point(272, 64);
      this.butnClear.Name = "butnClear";
      this.butnClear.TabIndex = 3;
      this.butnClear.Text = "&Clear";
      this.butnClear.Click += new System.EventHandler(this.butnClear_Click);
      // 
      // chckAnyKey
      // 
      this.chckAnyKey.Location = new System.Drawing.Point(8, 56);
      this.chckAnyKey.Name = "chckAnyKey";
      this.chckAnyKey.Size = new System.Drawing.Size(112, 24);
      this.chckAnyKey.TabIndex = 4;
      this.chckAnyKey.Text = "Ask for &any key";
      // 
      // chckShowTrademark
      // 
      this.chckShowTrademark.Location = new System.Drawing.Point(144, 56);
      this.chckShowTrademark.Name = "chckShowTrademark";
      this.chckShowTrademark.Size = new System.Drawing.Size(120, 24);
      this.chckShowTrademark.TabIndex = 5;
      this.chckShowTrademark.Text = "Show &trademark";
      // 
      // chckCustomMsg
      // 
      this.chckCustomMsg.Location = new System.Drawing.Point(8, 80);
      this.chckCustomMsg.Name = "chckCustomMsg";
      this.chckCustomMsg.Size = new System.Drawing.Size(168, 24);
      this.chckCustomMsg.TabIndex = 6;
      this.chckCustomMsg.Text = "&Use a custom message";
      this.chckCustomMsg.CheckedChanged += new System.EventHandler(this.chckCustomMsg_CheckedChanged);
      // 
      // textCustomMsg
      // 
      this.textCustomMsg.Location = new System.Drawing.Point(8, 104);
      this.textCustomMsg.Name = "textCustomMsg";
      this.textCustomMsg.Size = new System.Drawing.Size(256, 20);
      this.textCustomMsg.TabIndex = 7;
      this.textCustomMsg.Text = "<Enter your custom message here>";
      this.textCustomMsg.Visible = false;
      // 
      // lboxMsgs
      // 
      this.lboxMsgs.Items.AddRange(new object[] {
                                                  "A fatal exception OE has occurred at 0028:C0011E36 in VXD VMM(01)00010E36. The cu" +
                                                  "rrent application will be terminated.",
                                                  "A file that big? It might be very useful.But now it is gone.",
                                                  "The Web site you seek Can not be located but Countless more exist.",
                                                  "Chaos reigns within. Reflect, repent, and reboot. Order shall return.",
                                                  "Serious error. All shortcuts have disappeared. Screen. Mind. Both are blank.",
                                                  "Windows crashed again. I am the Blue Screen of Death. No one hears your screams.",
                                                  "Yesterday it worked. Today it is not working. Windows is like that.",
                                                  "Stay the patient course. Of little worth is your ire. The network is down.",
                                                  "A crash reduces Your expensive computer To a simple stone.",
                                                  "Three things are certain: Death, taxes, and lost data. Guess which has occurred.",
                                                  "You step in the stream, But the water has moved on. This page is not here.",
                                                  "Out of memory. We wish to hold the whole sky, But we never will.",
                                                  "Having been erased, The document you\'re seeking Must now be retyped",
                                                  "First snow, then silence. This thousand dollar screen dies So beautifully.",
                                                  "The Tao that is seen Is not the true Tao, until You bring fresh toner",
                                                  "With searching comes loss And the presence of absence: \"My Novel\" not found.",
                                                  "ABORTED effort: Close all that you have worked on. You ask way too much."});
      this.lboxMsgs.Location = new System.Drawing.Point(8, 136);
      this.lboxMsgs.Name = "lboxMsgs";
      this.lboxMsgs.Size = new System.Drawing.Size(328, 134);
      this.lboxMsgs.TabIndex = 8;
      // 
      // Form1
      // 
      this.AcceptButton = this.butnShow;
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.CancelButton = this.butnClear;
      this.ClientSize = new System.Drawing.Size(352, 273);
      this.Controls.Add(this.lboxMsgs);
      this.Controls.Add(this.textCustomMsg);
      this.Controls.Add(this.chckCustomMsg);
      this.Controls.Add(this.chckShowTrademark);
      this.Controls.Add(this.chckAnyKey);
      this.Controls.Add(this.butnClear);
      this.Controls.Add(this.textHost);
      this.Controls.Add(this.label1);
      this.Controls.Add(this.butnShow);
      this.Name = "Form1";
      this.Text = "RBSOD Client";
      this.ResumeLayout(false);

    }
		#endregion

		[STAThread]
		static void Main() {
			Application.Run(new Form1());
		}

    private void button1_Click(object sender, System.EventArgs e) {
      string s = "";
      if (chckCustomMsg.Checked) {
        if (s != "<Enter your custom message here>") {
          s = textCustomMsg.Text.Trim();
        }
      } else {
        s = lboxMsgs.Text;
      }
      if (s != "") {
        SendMsg(s);
      }
    }

    private void SendMsg(string aMsg) {
      using (UDPClient xClient = new UDPClient()) {
        xClient.Host = textHost.Text.Trim();
        xClient.Port = 6001;
        xClient.Send(aMsg);
      }
    }

    private void butnClear_Click(object sender, System.EventArgs e) {
      SendMsg("");
    }

    private void chckCustomMsg_CheckedChanged(object sender, System.EventArgs e) {
      textCustomMsg.Visible = chckCustomMsg.Checked;
    }
	}
}