I have a question for the masses of cyclist out there. I'm a newbie bike rider, and from reading this forum, clipless pedals are the way to go. I'm about to purchase a Trek 7500FX, and want to go to clipless pedals. The shoe sizes are what has me buffaloed. I know I need to try on a shoe 1st, but the cycling catalogs(Nasbar, Performance, Pricepoint) have great deals. None of the LBS have a good selection of shoes for me to guage sizes. I normally wear a 11.5-12 in a running shoe, so what size do I need in a cycling shoe? Thanks for any help.