  We report on a study of B mesons on N_f = 2 full QCD configurations using an
RG-improved gauge action, NRQCD heavy quark action and tadpole-improved clover
light quark action. Results on the heavy-light spectrum and the decay constants
from 16^3x32 lattices at a^{-1} ~ 1.5 GeV are presented, and compared with
quenched results obtained with the same action combination at matching lattice
spacings.
