Hello and thanks so much for your help.
@idesign: Thanks a lot for that document; a great help and info. I have just checked my board. It has a silver heat sink, so it´s an Adlink. On the bottom i found a sticker with PN: 994-170346 on it. So i assume it´s a 170346 board. Although that number is not mentioned on the document, i´am pretty sure that the installed Configuration stick does not support the VBD. It´s a 494362_02. The document says i must have a version with 494362_04 or _05. So i have to find out where i could find such an config stick to run a VBD with my board, right?? Do you maybe have one?
@Shaneomac: Thanks a lot for your help and the information. I guess thats the reason why i have never found 2-screen Dragon Cash games in the US.