I am an ex-collegiate rugby player who started looking at cycling after his knees where/are too broken down to run many miles. While researching road bikes, I discovered the sport of cyclocross. I bought a bike in May and have put about 300 road miles on it since (just been on trails a couple times). I'm planning to enter a few cross races this fall. I've been on these forums several times reading others posts, but now I've got plenty of questions of my own as I start to do some upgrades/modifications.