Some vendors do not release specifications of the hardware or provide a linux driver for their wireless network cards. This project provides a linux kernel module that loads and runs Ndis (Windows network driver API) drivers supplied by the vendors.
[http://ndiswrapper.sourceforge.net/phpwiki/index.php/List?PHPSESSID=b28b87ff0aec7df96a15472b24b07901 Before you buy: card list].
To compile and install the module with debian ( provided wou have the standard debian kernel )
apt-get install module-assistant ndiswrapper-utils ndiswrapper-source
module-assistant auto-install ndiswrapper