Searching for Supersymmetry with two same-sign leptons, multi-jets plus missing transverse energy in ATLAS at $\sqrt{s}$=10 TeV

A search for R-parity conserving supersymmetry using the ATLAS detector is described. The final state under study includes two same-charge leptons, two jets, and missing transverse energy. A data-driven method to estimate the number of Standard Model background events is proposed, and its discovery potential is assessed assuming an integrated luminosity of 200 \ipb and a center of mass energy of 10 \TeV.