how to install conky on ubuntu 9.04

sudo apt-get install conky
zcat /usr/share/doc/conky/examples/conky.conf.gz > ~/.conkyrc

vim ~/.conkyrc
# change background to :
background yes
# change own_window_type to :
own_window_type override
# change alignment to :
alignment bottom_right

# on laptop
:%s/eth0/wlan0/g

# if there are MPD errors delete all the liles with MPD