in the home tab against this post it is seen that view48 comment1. comment >does it mean that somebody has responded to my post? thinking that ,when i opened no comments were seen.
loading and playing a pgn in Arena

You really should try reading the Help information that comes with Arena. The programmer spent a lot of time creating this Help file, and some people act like it doesn't even exist. <rant over>
The Demo feature is for playing a game with an engine playing both sides. Demo does NOT scroll through an already played game. For that task, you should use the replay feature. (There's both an auto-replay feature and a manual replay feature.) For more info, please RTFM (read the, uh, fine manual).
I should note that in my copy of Arena 3.5, the speed setting of auto-replay is broken; Auto-replay always goes at medium speed regardless of its speed setting. (The manual-replay speed can be adjusted, though.)
i want to see a particular game in Arena. i load the pgn of the game. click on demo. after the initial move it gives a message like this>
ADD NEW MOVE
NEW VARIATION
OVERWRITE
CANCEL
if i click any one of the options , the pgn is not played continuously from move one. what to do ?
if we open a pgn in winboard, it will play as if in a slideshow. i want this feature in arena. when i load the pgn and click on DEMO it was supposed to play it continuously. kindly suggest. thanks