How do you create notepad in vbnet?

Create a new form and put a textbox in it. Et voila.

You can add extra things like change font, size, Word wrap, find/replace, print etc.. but bear in mind that you cannot change colour in a textbox. Well, you can but if you want to save it - you need to save it as a .RTF document so it saves the styles (bold, italic, colour etc.) - so i would use a richtextbox instead of a textbox.