To show subtitles on top of your movie you have two choices: 1. Use a media player that supports subtitles, or 2. install a subtitle engine.
1. The quick and easy solution is to download the media player: VLC Player.
2. If you want to continue using your current media player, we suggest that you download DirectVobSub - it will also display special characters (including arabic) if you have trouble with those. It's a program that runs in the background. In order to display subtitles you simply rename the IDX, SUB, SRT, etc. file to the same as your movie file name (keep the extention name (eg. .SUB)) and place it in the same directory your movie resides.