Wolfchild: I believe the ratio is 16:46. Honestly, I think it's mainly because I am overweight, otherwise known as fat. I'm already dropping some of it, but until I am back to a reasonable weight I doubt I can keep doing those hills with the bike I have. I should probably also point out that this is not an isolated incident. My knee has been like this for some time: if I exert it too much (like, playing tennis at my current weight) it hurts later and continues to do so until I've rested it for a while. I feel pretty confident having more than one gear is going to help in this regard.

WestPablo: Those do look pretty cool!

Darth Lefty: Thanks for the heads up, I don't think I'd want really narrow gears.