Hi, thank you for the answer!
I just got the panel, it's a Panasonic TH-42PW6 commercial panel and was fairly cheap.
it came with a separate tuner unit, but I don't want to use that thing.
I connected everything to the Beosystem 2 (IR-Eye, DVD player, Sat. receiver and the speakers) and connected the panel with a RS232 cable to the Beosystem.
Now the problem is, nothing happens if I want to switch on the system.
So what's the tweak you mentioned?
Thanks