lake_tuna, I would say go to a local bike shop and try out some bikes and talk to them about fit. A good fit on the bike is mostly about the reach from the seat to the handlebars, but as 531phile said, you can adjust that reach by raising the handlebars.

I like Rivendell's information on bike sizing:

http://www.rivbike.com/article/bike_...izing_position
http://www.rivbike.com/article/bike_...g_a_frame_size

It gets a little technical, but it will really help you figure out what you are looking for.

Other than that, just ride them and make sure you are comfortable. And really really make sure you don't buy a bike that is too small...that will be bad for your handlebar position, and you'll just be all squished and uncomfortable.