help wanted for partitioning hard disk

[dss.chandra]

I have a Ubuntu 9.04 installation on my hard disk , partitioned as follows


Filesystem Size Used Avail Use% Mounted on
/dev/sda1 142G 4.2G 9.1G 32% /
tmpfs 988M 0 988M 0% /lib/init/rw
varrun 988M 120K 988M 1% /var/run
varlock 988M 0 988M 0% /var/lock
udev 988M 160K 988M 1% /dev
tmpfs 988M 76K 988M 1% /dev/shm
lrm 988M 2.2M 986M 1% /lib/modules/2.6.28-15-generic/volatile
I want to have a dual boot hard disk of ubuntu and windows . Can you please tell me what steps I should follow ?

[dabl]

Here is guidance: http://www.psychocats.net/ubuntu/installing

[oldfred]

You are just showing the mounted space in Ubuntu.

show this listing:
sudo fdisk -lu

What version of windows?

Dual Boot Win7 & Ubuntu
http://ubuntuguide.org/wiki/Ubuntu:Karmic#Dual-Booting_Windows_and_Ubuntu
http://lifehacker.com/5403100/dual+boot-windows-7-and-ubuntu-in-perfect-harmony

APC various dual boot graphical install
http://apcmag.com/howto_search.htm?q=Keyword&catid=198
Installing Ubuntu 9.10 Step-by-step installation tutorial with screenshots
http://news.softpedia.com/news/Installing-Ubuntu-9-10-126370.shtml
Jaunty Jackalope / Windows7 Ultimate MultiBoot 'C' (with checkbox graphic for vista/7)
http://members.iinet.net.au/~herman546/p22.html