Leptonic $D_S$ Decays

We present preliminary studies towards the measurement of the branching fraction of the $D_S$ meson to leptonic final states using data collected with the {\sl B{\scriptsize A}B {\scriptsize AR}} detector at the SLAC PEP-II asymmetric- energy $e^+e^-$ storage rings. This report will focus upon the final data set, covering the full range of leptonic decay modes.