  We present the first STAR dielectron measurement in 200 GeV p + p and Au + Au
collisions. Results are compared to hadron decay cocktails to search for vector
meson in-medium modification in low mass region and quark gluon plasma thermal
radiation in the intermediate mass region. The $\omega \rightarrow e^{+}e^{-}$
spectra and the transverse mass distribution in the intermediate mass region
are also discussed.
