After you win a match and your character does his/her victory pose, press Start. You'll be able to attack your fallen opponent while he/she is down.
Hold Start + LP + MP + HPafter selecting your characters. Release the buttons when thematch begins to use your second character.
Press Start immediately after winning the matchto continue hitting the defeated character.
Highlight Dhalsim at the character selection screen,then hold Up for about ten seconds and press LP+ MP + HP.