The ATLAS Muon Spectrometer and the hunt for the Higgs Boson(s)

The Muon Spectrometer is an essential part of the ATLAS Experiment at the LHC. It is used both for triggering and for momentum measurements of the muons. The four different technologies used for the Muon chambers as well as their expected performance will be described. Furthermore, the ATLAS sensitivity for the SM and the MSSM Higgs bosons decaying into muons will be reviewed. Emphasis will be given in the expected discovery potentials from the first year of running