How to build application using a custom GUI

I've thought a lot about how to build this application and concluded
that I must make the main form invisible and somehow apply the images
that represent buttons etc to some kind of invisible form if that is possible.

Is that the right way to to it, or do you know of anything else?

 

won't the the controls too become invisible if I make the form totally transparent?

 

Thanks, I'll try that

 

Edit: What should I write to just make the dialog transparent?