E-mail: signaling@lanl.gov William Hlavacek, wish@lanl.gov Jim Faeder, faeder@lanl.gov Byron Goldstein, bxg@lanl.gov S-mail: MS K710, T-10 Theoretical Division Los Alamos National Laboratory Los Alamos, NM 87545, USA Software tools and website: Michael Blinov, mblinov@lanl.gov