Simulacion 4.0 for Excel - Simulación 4.0 for Excel is a flexible simulation tool featuring 34 random number functions, simulations with Monte Carlo method, and more. The product was developed in VBA and is compatible with Microsoft Excel 97 and above:
http://www.cema.edu.ar/~jvarela/index_eng.htm
Y para colmo es en español y gratuito!!!

Un saludo
X-Trader