  The gravitational lens configuration where a background galaxy is closely
aligned with a foreground galaxy, can provide accurate measurement of the dark
matter density profile in the foreground galaxy, free of dynamical assumptions.
Currently only three such galaxy-galaxy lenses are known where the lensed
source has a confirmed redshift and is reasonably bright at optical
wavelengths, and therefore suitable for observations with the HST Advanced
Camera for Surveys (ACS). Two of these were discovered by noting an anomalous
emission line (from the source) in the spectrum of a massive early-type galaxy
(the lens). To find further galaxy-galaxy lenses suitable for ACS imaging we
have looked for anomalous emission lines in the luminous red galaxy (LRG)
subsample of the SDSS DR3 spectroscopic database. Our search methodology has
similarities to that applied by Bolton et al. (which has had recent success),
but extends the upper redshift limit for lensed sources to z=1.4. Here we
report follow-up imaging and spectroscopic observations of two candidates,
confirmed as gravitational lenses by the detection of multiple images in the
line of [OII]3726,3729. In the first system, J145957.1-005522.8, the lens at
z=0.58, consists of two LRGs. The anomalous emission line is confirmed as [OII]
by the detection of the corresponding H-gamma line, providing a source redshift
of z=0.94. In the second system, J230946.3-003912.9, the lens is a single LRG
at z=0.29, and the source redshift is z=1.00, confirmed by partially resolving
the [OII] doublet.
