Hi ravi,
A Form is run when it's called from Program.cs (if using C#, if you mean the startup form)
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form2());
}
You can right click on the Project->Property->Startup form->Form2 (both C# & VB can use this way)
Regards