IDs/protocol for FIS

[Translating...]Hi, all.

Sorry for the post being in english, but my german is quite lacking...

Do anyone know the IDs/protocol needed for sending information to the FIS in a 2006 Passat over the Infotainment CANbus (and willing to share...)? I would like to be able to send data from my Empeg (an in-car MP3-player) up to the FIS.

Thanks in advance,
Stig