A future high-energy e+e- linear collider will allow precision measurements of the Higgs particle and verification of the Higgs mechanism by which all known particles obtain their mass.
           If Supersymmetry (SUSY) is a symmetry of nature, then an e+e- LC  will allow detailed  spectroscopic  studies of the  expected new particles.
           Current North American LC studies are focused on outlining the physics opportunities provided by an e+e- machine and on studying detector options.
          This talk will present some of the most  interesting physics  objectives  and discuss  the detector simulation effort. 
           A Java-based  distributed analysis framework and complete reconstruction software written for this work  will be discussed.
          Recent results of jet-jet W-boson mass reconstruction will be shown for  Large  TPC  and  Small  silicon detector models.