So, I have an interesting issue that I have been fighting for the last few days. I have a Trendnet TEW-443PI PCI wireless card, it shows up in the PCI Device list but not in the System Profile. I have installed and modified the AirPortAtheros.kext to the appropriate script and nothing. I am trying to build it's profile in the NetworkInterfaces.plist but I am missing it's IOMACAddress. Any help would be great!! I'm running 10.5.2 Kalyway.

::Edit::
I used the Atheros AR5212 chipset instructions.

First, you should not have to and I do not recommend building the network plist file, let the system do that on it's own and it will when the card is recognized.

There have been issues with using the script to add ID's and you are better off adding the one for your device rather than using the script.

Another issue is you provide no details on the device you have other than the ar5212 chipset so it makes it even harder for anyone to suggest possible solutions.

What are the devices current ID's and subsystem ID's?

Does the device support 802.11a/b/g or just 802.11b/g?

The device is a Trendnet TEW-443PI, it supports b/g. I am a little new to the in depth stuff so I don't think I follow you on what you are asking for when you say the device's current and subsystem id's. If you are referring to the manufacture and device id, I used 168c,13 which is what is recommended for the chipset as well as 168c,2051 which is recommended several places via Google to work for the card itself.