  A study of the decay B+->ppbarK+ is performed using 81fb-1 of data collected
at the Upsilon(4S) with the BaBar detector at PEP-II. The branching fraction of
B+->ppbarK+ is measured to be (6.7+/-0.9+/-0.6)x10^-6. An upper limit on the
branching fraction of B+->Theta*++pbar, where Theta*++ is a narrow state
decaying to pK+, is set to be 1.5x10^-7 for 1.43<m(Theta*++)<1.85GeV/c^2 at 90%
confidence level. All results are preliminary.
