Sorry for late reply - rather busy these days...
It's more about to find out what and how things are possible.
What I need is to have several VideoSources - which may run on other laptops (for example Milkdrop / WinAmp), or R4 or VJo, a DivX Video ...
So I can not install additional Hardware as having a PC.
The only fast transportmedium is firewire or 100 MB LAN.
Very interesting would be a Software Graphic Card.
The Stream of the SoftwareCard can be send over LAN and on the other side there is another kind of software, which can directly be used as VideoSource in Avenue.
May I can achieve this with fugStream ...
I also found an interesting tool called MaxiVista - which allows to expand the desktop to another PC/Laptop.
http://www.maxivista.com
C U