This article Basel IT Cost Higher Than Projected - Computerworld talks about BASEL II being more expensive to implement than IT departments expected. I suspect this is becuase most of them have not adopted a suitable technology platform and have either been suckered into a "BASEL in a box" solution or are trying to automate risk-based decisioning with traditional tools.
Adopt business rules, use it to automate the decisions, give the business power to edit the rules as the accord changes and see how that works...
