The bookkeeping gives you the filenames where Monte Carlo Simulation Data is stored. You can use this filenames then in an options file to make a DaVinci selection.

lhcb_bkk

You find a Tutorial here

export MYSITEROOT=/app/lhcb/sw
export CMTCONFIG=slc4_ia32_gcc34
export CMTPATH=$HOME/cmtuser
export PATH=$MYSITEROOT/local/gcc-3.4.6/bin:$MYSITEROOT/local/binutils-2.15.92.0.2/bin:$MYSITEROOT/scripts:$PATH
export LD_LIBRARY_PATH=$MYSITEROOT/local/gcc-3.4.6/lib:$MYSITEROOT/local/binutils-2.15.92.0.2/lib:$MYSITEROOT/lib:$LD_LIBRARY_PATH 
. /app/lhcb/DIRAC/LbLogin.sh
lhcb_bkk