Radio button help

I might be having a brain fart here but I am having a hell of a time
trying to get a simple radio button working.

I have a list of products, each with 2 radio buttons, one to select
pickup and one to select delivery. They correspond to an item model
object and to the ship field on the item model object.

I do not have a form_for or a form_tag around the list of products. I
was thinking of getting the radio button updates via a remote_function
call, but I am not having any luck.

Anyone have any good radio_button example code that will point me in
the right direction?