topcom wireless lan on Linux

Here is how to install a topcom wireless lan module under Ubuntu Linux (Hoary)
I’m not a Linux specialist, so this is the result of a couple of buckets of sweat.

Installation succeeded on Hoary (Ubuntu Linux) 2.6.10-5-386
First make sure you have all necessary packages.
Under Ubuntu Linux, use Synaptic, to install :
linux-wlan-ng
wireless-tools
linux-386
linux-kernel-headers (for the version of kernel you have -- mine was 2.6.10-5-386)
gcc
gcc-3.3
gcc-3.3-base
libgcc1

yeah -- it's a long list ... but you will need it to compile...

next, surf to :
http://linux-lc100020.sourceforge.net/
to get it working, I downloaded version 0.13 -- I also tried
it with version 0.14, but to no avail
once you got the tar.gz file into a folder, unpack it (tar zxvf zd1201-0.13.tar.gz)
don't compile yet, it won't work... you need more.

Next... tricky one...

download ipw2100-1.1.0.tgz from http://sourceforge.net (go through search and type ipw2100)
untar it.. (tar zxvf ipw2100-1.1.0.tgz
copy the files
ieee80211.h
and
ieee80211_crypt.h
into the headerfolder : /usr/src/linux-headers-2.6.10-5/drivers/net/wireless
(this step is required for this specific wireless module)
remember the file you untarred... zd1201-0.13.tar.gz ?
go back to it and modify zd1201.c (yeah you really have to)
replace every instance of ieee802_11 with ieee80211 -- shitty job...
run make
run make install
copy the zd1201.fw and zd1201-ap.fw files into the
/lib/hotplug/firmware folder and
the /usr/lib/hotplug/firmware folders...
run depmod -a
run insmod zd1201.ko

(added thanks to Stephen Pike)

or -- if that gives an error on symbols
use modprobe -v zd1201 instead

I then rebooted the system (yeah -- not really required)
System>Administration>Networking should now list your wireless connection.
change the properties to make it active and choose the right accesspoint
use the iwconfig, dmesg and ifconfig commands to check your configuration..
ifup wlan0 and ifdown wlan0 should allow you to start and stop the wlan module..

lots of luck !