This is the PC version of Grand Slam Tennis. After you select two players for the match, use the pull down menu to choose the match length (3 or 5 sets) and whether you want a final set tiebreaker. If you don't choose either of these options, you will get a warning message(s) when you start the match. You will notice two option buttons to the left of the players' names on the scoreboard. These indicate who will be serving. Do not click on these buttons or the serving sequence will become messed up. Just click on the 'Serve' button for whoever should be serving and continue to do so until the game is ended and it's the other player's turn to serve. If a tiebreaker occurs, you can tell who's turn it is to serve if his option button is clicked (just like you would normally during a game). There is also an option to view the match stats during the course of the match, from the pull-down menu.