I am now a Quantitative Analyst for the Global Equity Derivatives Group of the Union Bank of Switzerland.
My number theory book (written with Cristina Romero) is now in print. You can order a copy from Prentice-Hall or from your local bookstore. Detailed information about the book, Number Theory with Computer Applications , is now available. The web page for the book also has some Mathematica notebooks and an instructional manual for using Mathematica and C. I will post instructions on using Maple with the book by the end of September.