Questions are never stupid unless they are already explained some posts ago . I don't realy understand your question, but I guess a downloaded game can be tunneled, but than you should actually tunnel the host DS and the other DS's over the internet need to download the game too. Currently I'm pretty sure rooms aren't implemented yet, but eventually the program will have the functionality Teamxlink.co.uk's kai has. So you can create your own room and play with gamers. Eventually this will be implemented I guess, depending how Sgstair is going to release the tunnel project. If it will be released as application, he should implement these thing. But if he releases it as library or something, then other can implement things like this. Actually, I hope he will let others participate in the development of the interface, so development will go faster and Sgstair has time to work on other projects