Hey im trying to load a draw a bitmap. But I don't know how to get the System.Windows.Form.PaintEventArgs?

Code:
private void Draw_Ball()
{
	Image ball = new Bitmap("c:\\source\\c#\\bounce\\ball.bmp");
	Graphics g = e.Graphics;
	g.DrawImage( ball, new RectangleF(10, 10, 
	ball.Width, ball.Height) );
}
Anyone know what im doing wrong?

Thanks