BMW Business RDS - Phillips 22DC785/23 Radiocode needed

[Notausgang]

Hello guys,
some days ago i bought a new batterie for my BMW E36 and changed the weak old batterie against the new one. Because i was in hurt, i'm not thinking about the codeprotection of my radio. Now i have the problem, that i couldn't find any information about the needed code. I bought that car for roundabout 2 month and the cardealer had not gave me my any radiopass or some other paper with this code on it. After some google searches i found this page and hope that somebody could help me to find any decoder-soft or can give me the needed code.

The radio is an BMW Business RDS / Phillips 22DC785/23 and the number is PH7850S1084202. On some other pages in the net i found out, that the last 7digits of this number must be the serial-number. Would be very nice if someone could help me to get my radio working.

Thanks in advance Willy

PS: if somebody has the circuit-diagram for this radio, it would be very nice if he would send it to me. Because i will try to get an auxillary input for my mp3 player, it will be very helpful to get the chematics.

[tmcu]