installer ethernet card not recognized

[Charles Blair <c-blair@illinois.edu>]

   I am trying to install squeeze on a 64-bit Toshiba.

   It asks me to specify an ethernet card.  I think what
I have (for wireless) is 

   Atheros AR9485WB-EG

   I tried selecting what looked like the closest approximation,
something like ath9x, but the screen flickered briefly, then
returned to asking me the same thing.

   I was unable to find this specific thing on a "firmware"
list.  However, I'm not sure what I would be supposed to
do if I found such a thing.  This machine has a CD drive,
but not  a floppy drive