how do i get s-video out on the latest beagleboard and kernel?

i just got my beagleboard in the mail
its rev c4
and i have the latest kernel 2.6.29
this uses DSS2 for video control and switching

i unfortunately do not have a DVI monitor, so....I want to get my
video working on both a 720p hdtv and s-video so that i can use the
graphical interface

my questions are:
what boot argument do i need to get 720p output
and
what boot argument do i need to get s-video out working