See 'WikiDevi' @ the Internet Archive (MW XML, Files, Images)
upgraded MW to 1.30 - maybe things are slightly less broken
Uses a Wi-Fi controller/bridge to connect to the internet and translate commands to proprietary 2.4GHz protocol.
Teardown / packet sniffing of a controller: 
- uses "HF-A11-SMT" Wi-Fi module by Hi-Flying , firmware appears to be linux-based (Ralink chipset?)
- LT8900 - 2.4 GHz wireless transceiver. product page and datasheet (there is also a chinese "LT8900 Application manual" floating around the internet)