An area of interest to NPAC is use of WebWindows in the financial industry. Here, Java can be used to provide excellent PC (home, office) interfaces to real time trading data. Java will allow downloading of simple modeling packages to aid on-line trading. However, today's complex financial instruments require computationally intensive Monte Carlo algorithms for accurate simulation. Here, we use Web technology to allow investors access to stock data, and simulation systems running on the classic MPPs developed in the HPCC program.