As I see there are no more than 100 strings (not hidden) in the program I guess there would be more such as error that I haven't seen yet but as I think I can put them in a file. I only need those errors to translate it. I think doing in this way it wouldn't take you more than 5 day's. If you agree this idea I could do a php application like a form to translate it. The structure would be like this:
Original Translated
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File Archivo
Browse for a file Seleccionar un archivo
Then it generate a simply plain text file wich will be sended to you.
Regards