Atmega168 WLAN - osc-protocol - opensoundcontrol to control

Hello,

I've started a new project.
I want to control a Atmega168 via WLAN. The protocol should be osc 
(http://opensoundcontrol.org/), because there are very good apps for 
iPhone/iPad. There are a lot of Videos in Youtube, but no tutorials, 
oder any Code!

Now I've been searching the internet for over 5h and still haven't 
found, what I'm looking for!
I want to create a Ad-hoc-Network, send a osc-message to the board and 
then handle the message in my code to do something. (e.g. toogle a PIN)

How would you manage the situation (Getting the Atmega168 to WLAN with 
OSC)?

I don't want to program a new UDP-Stack etc.. are there any ways to 
avoid this? Are there good librarys?

Thanks for your statements!
Auch Antworten auf Deutsch sind gerne gesehen!!

Best regards und freundliche Grüße,
Torquy