  There are many extensions to the Standard Model of particle physics which
predict the addition of a U(1) symmetry, and/or extra spatial dimensions, which
give rise to new high mass resonances such as the Z' and Randall-Sundrum
graviton. The LHC provides a unique opportunity to explore the TeV scale where
these phenomena may become apparent, and can be searched for using the
precision tracking and high energy resolution calorimetry of the ATLAS
detector. This poster presents the search for high mass resonances in the
dilepton channel, and was conducted with an integrated luminosity of 1.08/1.21
fb-1 in the dielectron/dimuon channel respectively, at a centre of mass energy
\surd s = 7 TeV.
