Compiling Windows GUI-application

[Fab]

Hi
I'm new in D but I used coding Delphi. I decided using D as my main
programming language because I've dumped Delphi as a consequence of its
awkwardness. Now I'm using D with Tango on the MS Windows plattform. So I
don't want to miss GUIs and I decided to use GtkD.
Actually I'm happy because I haven't got any problems creating simple
applications with that library.
But ... when I execute my application I can see my GUI and additionally an
empty commandline (the "windows terminal").
I compile my code with dsss and the dmd compiler. I've googled and found this
two links:

http://www.digitalmars.com/ctg/ctgDefFiles.html
http://www.digitalmars.com/ctg/win32programming.html

But I cannot make head or tail of it.
I would be very happy if you showed me how to get rid of that commandline.
I hope you can understand my bad english.

Greetings
Fab

PS: I'm lloking foward to your answers.