realtek driver 8172 for lenovo X100e

to install realtek wireless driver for lenovo thinkpad X100e in ubuntu 9.10 karmic is easy.

get the kernel headers
sudo apt-get install build-essential linux-headers-`uname -r`

download:
http://launchpadlibrarian.net/33927923/rtl8192se_linux_2.6.0010.1012.2009.tar.gz

extract.
sudo -i
cd into directory of drivers


make
make install
reboot!