First of all Thomas - Congratulations. I've just had a quick 'play' with your programme, successfully changing folder & file names and if I can do it the rest of the world will find it easy.
For those who couldn't get set up to work - neither could I. However, if you unzip the other folder called "K7SDCardTool1" it unzips 17 files. K7SDCardTool is the application to use, remembering first to open the inf file.
Hopefully I can give some time to studying Thomas' program in more detail this week

John