Hello has anybody any experience of using addon convertor ,I have a copy of Eurowings Commuter Airlines for FS 2004 ,I believe this sim has not been updated and is not being updated for use with FSX ,I would like to know if this addon convertor will allow me to load and fly Eurowings Commuter Airlines with FSX ,thank you for reading I hope someone can give an answerpeter

There's a demo version available, have you checked it out? Gives a 10 minute trial.