Um, Greg... that's a trickier question than you realize.
<vaguely remembers diagrams from Earth Science>
If I'm remembering correctly, the air rises at the equator and the poles, and falls at the Tropics of Capricorn and Cancer. Coriolis effects create the "prevailing" winds between them, but it's a crap shoot which way the wind blows in the rising and falling areas. Lemme find a chart...
Important info:
http://www.reference.com/search?r=13&q=Coriolis
http://www.reference.com/browse/wiki/Coriolis_effect
http://en.wikipedia.org/wiki/Coriolis_effect
Hm, those references say the wind blows the same way everywhere in the southern hemisphere... Guess I shouldn't count on vague memories of 32 years ago...