  We present preliminary measurements of branching fractions for the charmless
two-body decays B0 -> pi+pi- and K+pi-, and a search for B0 -> K+K- using a
data sample of approximately 227 million BBbar decays. Signal yields are
extracted with a multi-dimensional maximum likelihood fit, and the efficiency
is corrected for the effects of final-state radiation. We find the
charge-averaged branching fractions (in units of 10^{-6}): Br(B0 -> pi+pi-) =
5.5 +- 0.4 +- 0.3, Br(B0 -> K+pi-) = 19.2 +- 0.6 +- 0.6, Br(B0 -> K+K-) = <
0.40. The errors are statistical followed by systematic, and the upper limit on
K+K- represents a confidence level of 90%.
