Hey guys, I'm definitely interested in upgrading my road bike now and get a fixed gear bike for Boston's Spring/Summer season next year. All your bikes in the picture thread blows me away and I'm super jealous. I'd like to be recommended some places where I can buy a complete set, or would I have to buy parts and build it?

If I need to build it, what are some good sites in getting me started?

I want something identical to this: