  The 8m class telescopes allow for the first time to study stars of external
galaxies with the same resolution and S/N ratio which has been so far used for
Galactic stars. It is quite likely that this study will shake some of our
current beliefs. In this poster we highlight some of the results which have
been obtained for two giants in the Sgr dSph thanks to the UVES spectrograph on
the ESO 8.2m Kueyen telescope. Further details on the observations and data
analysis may be found in Bonifacio et al (2000).
