While your opponent computer is playing go on pressing [Alt]+[F4]
it will become a foul and a miss.

NOTE:dont press while u are playing it will quit.

STOP THE CUE BALL WHNEVER AND WHEREVER U WANT :!!!!
when u are playing the game just press the close button, this wont close the game but it will stop the cue ball when u press the close button thus stopping ur opponent to score.