I think this holds true for both the 41X and 43X devices.
Ministumbler 0.4 does NOT work.
Someone mentioned that they use a TI chipset which I believe is the case.
It was posted elsewhere on this board, but the only product I've gotten working on this device is
http://www.wififofum.org .
It's no where near as nice as my network stumbler experience, but it works with many chipsets.
** As an aside, many of the PPC2003 devices will allow you to 'see' the APs out there from the Network Cards tab. Unfortunatly it's kind of sketchy on details for the APs it sees.
- Ken