Displaying video capture in a picturebox

Hi I have compiled the sample PLayCap from the directshow.NET website in C#. http://directshownet.sourceforge.net/
samples are available here : http://sourceforge.net/projects/directshownet/files/

PLayCap - This application creates a preview window for the first video capture device.

Although the program works fine, i need to add buttons to the form. I cannot do that since, the video capture is displayed on the entire form. I want it to be displayed on a picturebox, for instance picturebox1. So that I can move it a little up and put some buttons.

Does anyone know how to do that ?

Many Thanks