[closed] SIMPLE decoding

Please, I beg you, can someone help me with this?

I think all the tutorials and stuff out there are totally confusing, cant somebody provide a SIMPLE example for a SIMPLE problem.

IP, UDP, [My protocol], RTP

Say my protocol is ONE byte, for simplicity. How can I display this byte, and then have the normal RTP display? I do not understand this.

The result I want to have is (seen in wireshark) :

 Frame 22... 
 Ethernet II... 
 Internet Protocol Version 4...
 User Datagram Protocol... 
 My Protocol
    My byte: 1 
 Real-Time Transport Protocol
    Rtp Version : 2 
 ...

If there was a possibility I would PAY somebody to help me with this!