How to increase the font size and font name in Message box, using Vb.net

I resolved my problem, by creating a new form and placing a label, button. Now it behave as message box.
Also i have changed the font size and color of the label as per requirement. Below is the code written in VB.net 2005

private void Form1_Load(object sender, EventArgs e)
       {
           this .MaximizeBox = false ;
           this.MinimizeBox = false;

           msgbox("Hello world.", "Message Box", true, true);

           this.label1.Left = this.Width - 800;
           this.button1.Left = this.Width - 500;
           this.button2.Left = this.Width - 400;
       }

public void msgbox(string msg, string title, bool ok, bool cancel)
       {
           this.label1.Text = msg;
           this.Text = title;
           this.button1.Visible = ok;
           this.button2.Visible = cancel;
           SetHeightWidth(ok,cancel);
       }