how to create visual studio 2010 opening form

Hello, I want to create a special form with special design, just like the visual studio 2010 opening form.

I have created an ellipse form, but I want a special form wikthout edges. Here some code for the ellipse form:

using System; 
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
    
namespace NonrectangularForms
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }  
        private void Form1_Load(object sender, EventArgs e)
        {
            SetElipseRegion();
        }
        //setting the form's Region (probably the form as ellipse)
        private void SetElipseRegion()
        {
            Rectangle itsme1 = this.ClientRectangle;
            using( GraphicsPath itsme2 = new GraphicsPath())
            {
                itsme2.AddEllipse(itsme1);
                this.Region = new Region(itsme2);
            }
        }
        //using the mouse events to move the form around
        Point its1 = Point.Empty;
        //when the user clicks on the form's client area, the MoseDown event fires
        private void Form1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button != MouseButtons.Left) return;
            its1 = new Point(e.X, e.Y);
        }
        //when the user moves the mouse, MouseMove Event fires
        private void Form1_MouseMove(object sender, MouseEventArgs e)
        {
            if (its1 == Point.Empty) return;
            Point location = new Point(this.Left + e.X - its1.X, this.Top + e.Y - its1.Y); 
            this.Location = location;
        }
        //MouseUp event fires to stop the move
        private void Form1_MouseUp(object sender, MouseEventArgs e)
        {
            if (e.Button != MouseButtons.Left) return;
            its1 = Point.Empty;
        }
    }
}

So I wourld like to create a nonrectangular dorm. Can somebody help me.