You're welcome.

>Thanks Sergey, works a dream in my app and managed to create a parameter to take the file name in each case and auto open it in the app.
>
>My only issue now is with multiple files, it appears that only a single file can be used this way with my current app. My idea was to write another app which manages and writes each of the files right clicked to a list that can then be picked up and launched by my program, can't see any other way of changing the one instance per file behaviour.
>
>Many thanks for getting back to me on this, your assistance is greatly appreciated.
>
>All the best,
>
>Simon