Yes is it in the PGN and when you reply a message in "Post your Reply" box on the top are the tools , you will see a small chessboard diagram click on that and away you go
How do I post a chess game in the forum?

asampedas this link will show you how to add a game

asampedas this link will show you how to add a game
Thats very complicated for some one like me,who is new to computers.
Is it the PGN?