  We have evolved a series of thirteen complete solar models that utilize
different assumed heavy element compositions. Models that are based upon the
heavy element abundances recently determined by Asplund, Grevesse, and Sauval
(2005) are inconsistent with helioseismological measurements. However, models
in which the neon abundance is increased by 0.4-0.5 dex to log N(Ne) = 8.29 +-
0.05 (on the scale in which log N(H) = 12) are consistent with the
helioseismological measurements even though the other heavy element abundances
are in agreement with the determinations of Asplund et al. (2005). These
results sharpen and strengthen an earlier study by Antia and Basu (2005). The
predicted solar neutrino fluxes are affected by the uncertainties in the
composition by less than their 1sigma theoretical uncertainties.
