thanks for the replies guys!
Sorry I'm a little late to respond... I'm keeping Java in mind then for when I get the game in my hands. I still need to find me a decent computer to play the game, for I have a mac right now

But I can't skip this game so I think of buying me a second pc.
The reason why I explicitly asked about 609 was not that important. I was just asking myself if there were Belgian or Dutch virtual squadrons. 609, 349 or 350 virtual,... it's all the same to me