Moving the order of the items on checkout switcher

-- url of the page with the problem -- : starsupplyalliance.com
-- HikaShop version -- : 2.3.1
-- Joomla version -- : 3.2
-- PHP version -- : 5.4
-- Browser(s) name and version -- : XXXXX x.x.x
-- Error-message(debug-mod must be tuned on) -- : Error_message

Currently the order for Display method for registration Switcher is login, registration, guest - how do I change the order to put guest first?

Thanks,

Mike