"International" channels on a CM9

[Jordan Coleman]

I have an embedded system that contains a Wistron CM9 802.11 card,  
purchased in the US.  After extensive testing in the US, the unit is  
now being installed in Europe, where 802.11b/g channels 1-13 are  
employed.  How can I enable channels 12 and 13 on this hardware, which  
currently seems to only be able to use the "US" channels, 1-11?

ifconfig has the 'chanlist' command, but it seems like there's more to  
enabling those channels than just giving the 802.11 stack permission  
to scan there.

Any help is appreciated.

++Jordan