You must have Mathematica 7.0 or 8.0 installed. Mathematica is commercial software that may be obtained here. xSSA will work in Linux, Windows, or Mac OSX. xSSA is currently in alpha-development and has not released to the general public. Please respect this if you have been given an alpha-test copy.
Get the Distribution
xSSA is part of the xCellerator system, although it is a stand-alone notebook and does not require any other parts of xCellerator. You can get the distribution from http://sf.net/projects/xlr8r If you want to do deterministic simulations you should also get xlr8r It is available from the same web site. However, xlr8r is not required in order to run xSSA. If you want to do multi-compartmental two-dimensional simulations you should also get Cellzilla2D (same site). If you want to share CelleratorML files you should also get CelleratorML (same site). If you want to use SBML you should get MathSBML from http://sbml.org/Downloads/.
Installation (ALL OPERATING SYSTEMS)
0. You must have a working Mathematica distribution installed. This program requires Mathematica 7.0 or higher to work. Mathematica is commercial software that may be obtained here. 1. Unzip the download. This will create a folder xSSA-<version-date>, where the string <version-date> depends on the version downloaded. 2. Inside that folder, look for a notebook xSSA-installer.nb. Open that notebook with Mathematica. 3. From inside Mathematica, select: Evaluation > Evaluate Notebook 4. You will be asked to locate the "install folder" - this is the folder you just created in step 1. A pop up browser will allow you to browser for and select this folder. 5. Answer the menus as they appear (just click OK). 6. When the installer is done you no longer need the download folder, although you may want to copy the html folder someplace for reference as it contains complete documentation of xSSA. Click here to begin looking at this documentation.
Look in the html folder in the distribution folder for complete documentation and examples. You may want to save this folder for future reference. Further details may be found on the web site at http://xlr8r.info/