1. compile & install ndiswrapper
# get debianized latest source
wget http://ndiswrapper.sourceforge.net/debian/ndiswrapper-source_1.1-1_i386.deb
# install deb, will create tar.gz file in /usr/src
sudo dpkg -i ndiswrapper-source_1.1-1_i386.deb
# unpack into /usr/src/modules
cd /usr/src
tar xvfz ndiswrapper-source.tar.gz
cd modules/ndiswrapper
# build 
fakeroot debian/rules binary
# install
sudo dpkg -i ../ndiswrapper*.deb

2. copy driver from XP
# browse from http://smc.com/index.cfm?event=viewProduct&localeCode=EN_USA&pid=585
# download Windows XP driver
cd /tmp
wget http://smc.com/files/AN%5CDR_2862wV.2_WHQL.zip
# unzip it
unzip DR_2862wV.2_WHQL.zip

3. run ndiswrapper 
# install XP driver into /etc/ndiswrapper
cd 2862w\ v.2\ WHQL/Drivers/Driver
sudo ndiswrapper -i SMC2826W.inf
# verify that ndiswrapper & driver installed ok
ndiswrapper -l
# load module
sudo modprobe ndiswrapper

4. configure interface
# verify that new wifi interface is available
iwconfig
# modify interfaces file
sudo vi /etc/network/interfaces
### these are for fixed IP
##       address 192.168.1.98
##       netmask 255.255.255.0
##	gateway 192.168.1.1
### and this is for DHCP
#iface wlan0 inet dhcp
### modify this to suit your AP setup
##       wireless-essid FOO
##       wireless-key s:BAR

5. fire it up
sudo ifup wlan0

References:
http://sourceforge.net/projects/ndiswrapper/
http://ndiswrapper.sourceforge.net/phpwiki/index.php/InstallDebian
http://ndiswrapper.sourceforge.net/phpwiki/index.php/Installation