where can i get a non-resident fishing license for baja california?

i am planning a car trip down the baja and will be doing some fishing.. the last time i went to cabo i was required to purchase a license.. this was handled by the "captain" of the panga.. i wont be fishing on a boat this year, and i need to know how to secure a license that will be good for the 2 weeks in down there.. how do i go about this??