Okay, in this tutorial we're going to use Visual Studio and C# .NET to create a close replica of the Windows Calculator. First things first, let's jump in and go ahead and create a new project. We'll call it "win coke". What this does is create a blank Windows form. If we ran this right now using the start button or the play button, what we'd get is just a very simple empty form. Alright, we haven't done anything with it yet, and what we're trying to recreate again is the Windows Calculator. So, let's modify a few things about the form itself that will make it look a little closer to the calculator. Namely, we need to disable the maximize button. As you can see, that doesn't work here. We can remove this icon because I don't have a calculator icon to replace it with. We'll change the name of the form too "calculator" and then we'll set it to our application to start in the middle of the screen, just so it stays within the viewing area of the recorder I'm using. Okay, so first things first, I have the form selected. When I have the form selected, you'll notice that the properties dialog over here will populate with all the properties associated with this particular form. In your Visual Studio, you may have it shrunk or minimizing I should say. To open it, you can simply click on properties and pin it so that it stays open. "Form1" is the name of our form, but it's also the text that's showing in the label. So, if we wanted to rename our form, we can simply type into this particular property that we want to call it "calculator". Like I said, we don't have an icon for it, so I'm...