I have just downloaded the trial of ultimate s and have rendered to 24p. awesome! but what do i do now? i have edited all that i need to edit. so what i need to know is when to use 2-3-3-2 pulldown, 2-3 pullups, 4-3=1 crossover...just kidding....but when am i supposed to used which method...for burning to DVD

thanks
jeremiah