First, thank you for the answer of the second question, I think I should get it work with it.

It's ok, I'm german lol XD
pt1: what changed to your netbook? I never really used dplay_status... i prefered the "connection" variable.
The problem is, that on the clients "dplay_id" is zero,
and so the whole code doesn't work.
Erm...
The differents between netbook and PC...
It's another systems software, another antivir...
But other multiplayer worked on my PC some months ago too,
I have no idea why it doesn't work now anymore, so I just want to know,
what COULD be the problem that I can't enter a session, so I can see where I have to look for the fault... 
thanks ^^Problem solved, reinstall did the work...

Thank you again ^^