[2.0] Creating Custom Dialogs

Ok, this is my first attempt any anything mobile. I am trying to make a simple form that collects a few pieces of information. In a regular app, I can just design the form, and instantiate it, sending the data collected to the main form, etc.. I have no problem understanding instances and multiple forms. My problem is, I can't seem to just get a dialog to appear in the center of the screen (sort of like, if you go into file explorer, click Open. You have a small modal dialog box.) Everything I do seems to create a full screen form, even when it appears normal in the VS designer. Do I need to inherit from another dialog, and place controls in code, or can I create this dialog with the designer using some other template rather than windows form?

Bill