Thank you for the quick reply! For Whatsit: I'm running Vista - but if theres a solution on linux I could just dualboot on vpc to linux... that's no biggie. Meskibob got it right, I'm trying to restrict the outgoing trafic since I need most of the bandwidth when streaming.
As there are no current solution in the program it will be a matter of finding an 3rd party application to handle this.
I was actually considering that a firewall might do, but i can't think of a way for a general purpose firewall to make a mac-address filter for a specific application. And blocking all connections but the connection to the ps3 would be inconvenient
The only solution i can come up with is to make a virtual network connection (not VPN - just the protocol) where you would be able to control the packageflow... but i wouldn't know where to begin with that task.