I got my first real bike a couple of weeks ago (Gary Fisher Tassajara) and I have yet to purchase a lock for it. I am going to college so I would like to use it to get to classes faster. I am leaning towards getting a U-lock like a Kryptonite New York or an OnGuard Brute STD. I was wondering if a U-lock alone around the front wheel and the frame is good enough or if I should invest in a chain. Also, how would I go about using a chain/u-lock combo? I don't really know how I would set up the chain and u-lock around the bike and the rack. Any suggestions or tips? Thanks and sorry if this is the wrong forum to post in.