there's threads on this already. but IIRC the conclusion is that you still need to do it by hand.
you really should be doing it by hand anyway:
a) there's not THAT many cocktail games
b) you will get a chance to get to know your cabinet and games better
c) some games require some tweaking to controls for P2
d) some games don't work perfectly in cocktail mode yet.
you can do it in an evening. grab a beer, kick them off one at a time and enjoy it.