Why the new windows?

I am program for some years now, but I have just started with C#. I have a quistion about those forms, hopefully somebody can give me some answers. When I run an C# application on my PDA that contains 2 different forms, and when I open that other form with with the form that's shown at startup the form is displayed. BUT!! the startup form is still shown. Why is this?? When I also look in [Settings->Memory->Running Programs] it shows that there are 2 programs running. Is this correct? I was in the assumption that it should say 1 program. But it looks like it that every new forms is seen like a new program. Hopefully somebody can explain this to me. Tnx in advance, Barry Schoorl