How do I programmatically create a windows form?

I have a unique c# source file named source.cs that i compile using CSharpCodeProvider from a builder to get an executable.

I would put an option on the builder whether to display the About form on application startup or not.

How can i create a form with title as About Us then add controls within (Labels, RichTextEdit etc..)

Something like

if (display_about_dialog) {
// code to display the form }

Any help would be highly appreciated