Pure Win32 DirectX 9 examples that have been ported to Delphi can always be found @ http://clootie.narod.ru/ and downloaded from http://sourceforge.net/projects/delphi-dx9sdk/.

Unfortunately, I think most of them are Direct3D ports and not DirectPlay, but check just in case.

If I have time over christmas I may port some, I remember doing some DirectPlay demos back in the days when I thought DirectXPress would be a good idea, but I can't seem to find them on my HD, so a new port is probably best.