Welcome To Bike Forums, Conan!

Frame size and fit can be really strange topics. Just because you're the same height as someone else, doesn't necessarily mean that a certain size of bike will fit you both correctly. Each individual body is different. Most of us fit the physical norm and we can more or less fit the same bike that someone else can fit who's the same height. However, that sometimes ain't the case!

That said, there are certain rules of thumb to go by, if you're not accompanied by a bicycle. They go as the following links would suggest:

1) www.ehow.com/how_4760992_bicycle_fit_guide_html

2) http://bicycling.about.com/od/howtor...ike_sizing.htm

3) http://www.ehow.com/how_14104_determ...ect_frame.html

Good Luck!