Thanks for your reply. re “If you have examples of software which works for you” in the case of backtesting and history data, they are all pretty crap. The history data is always a problem and I think this is the root cause of why most of the back-test applications I have tried are also problematic, even Tickstory with is current heavy dependence on Dukascopy has lots of gaps in the history.
Forex Strategy Builder is the closest I have found to getting it right in my opinion, however this is still problematic and buggy. at least it is open source and because its build around XML is platform agnostic (although I have never tried to get it working on Linux) it is also an example of a configuration interface that generates an XML file that is used by a server application (Forex Strategy Trader) which is what I was describing above.
other than that you would have to go to an application which is not related to Forex to see an example, services with configuration files have been around a very long time, but I would be happy to develop a design breif to explain this better if you like (time will be a challenge for me as well but I believe in what your doing and want to help) the beauty of this approach is that it is always running in the background and as a result your chosen pairs can be always up-to-date. if you use you current Gui to generate the Configuration file then half the work is done I think.
