Arduino Mega + ITEAD WiFi Shield

Hello,

I've bought the ITEAD WiFi Shield and plugged it onto my Arduino Mega.
I've tried several libraries but I didn't manage to get it working. It simply can't connect to my Network.
Can anybody tell me which library to use and provide me a small Guideline how to connect to an existing AP?

Cheers,
Marius

Ditto on this setup/issue. Is there a how to for this anywhere? Been looking and haven't found anything.