Where are they ?
The images are loacted in the Form1.resx file and not in the project resources like normal images you bind.
just open the Form1.resx in the designer and you will see this images.
How can I get other of them and use them？
Moreover, the VS2005 comes with image library that contains this images and much more, usualy at:
C:\Program Files\Microsoft Visual Studio 8\Common7\VS2005ImageLibrary
Here is a useful tool extracting images from an assembly and displaying them in the user interface：