There's a catch with Selen games as far as I played some of them, specially with Shakkin Shimai 2, and this is that they need a serial number in order to be played, also and equally important, dummy cut versions does not works because once you introduce the serial, the program runs a check to of the authenticity of the game and for that end it only checks some of the dummy files in the image you have mounted, so if you have a dummy cut version it will never work, that's the reason why I had to download again Shakkin Shimai 2.
The real problem here is that serial numbers are usually given with the game when you download it and if not, it'll be pretty hard to find.
However if you got the serial and the full version of the game then just leave the image mounted on the virtual drive and use the serial, and wait for the program to finish the check, if not leave me another message and we'll see what we can do, good luck :).