I was pleasantly surprised in my visit to the Language Log to see R used: "These days, the most straightforward way to answer a question like this is to do a Monte Carlo simulation. This is easy to do, e.g. in the (free software) statistics language R <http://www.r-project.org/> :" http://itre.cis.upenn.edu/~myl/languagelog/archives/004328.html#more Pay a visit. David L. Reiner Rho Trading Securities, LLC Chicago IL 60605 312-362-4963 [[alternative HTML version deleted]]