Neil
I have been using some of the in built database codes
did you try the file section on this site?
I had thought of using one of the IR utilities to create the complete set of codes per device, but I had heard that this can be quite risky as you have the chance of sending service codes and ***** the whole system, Is this so?
yes, it is possible, but extremely unlikely. It is not as if manufacturers add auto destruct sequences on purpose. Most of the time it is like a specialized setup code that could mess up something, or put it in a particular mode that you don't know how to get out of it, also they tend to exist more on TVs (i.e. like convergence)