Actually, I'd have a question about 650C vs 700C frames and wheels, because I admit I am fuzzy about the 650C wheels: I understand they must be a bit smaller than a 700C, but.. would a frame for 650C accomodate a 700C wheel? Would normal V-brakes work, on a 650C frame with a 700C wheel? And what if I put a 26" wheel on a 650C frame, would that work?

I have never seen a 650C wheel in my life, I think.