Use a virtual machine insead of Installing UBUNTU!!

Microsoft Virtual PC 2007 ( Its free )
http://www.microsoft.com/downloads/details.aspx?FamilyId=04D26402-3199-48A3-AFA2-2DC0B40A73B6&displaylang=en#filelist

Download and mount the UBUNTU CD image on the Virtual Machine from
http://no.releases.ubuntu.com/jaunty/ubuntu-9.04-desktop-i386.iso


and hmmm.... enjoy

I wish I could add screenshots or a video too, but sorry, time nahe hai!!!

there is also sun's virtual box and vmware for same purpose

I don't know about sun's virtual box, but VMWare is not a free software, My Virtual PC is free and easy to use too, thats y, i mentioned that only


and... HAPPY EID MUBARAK to all

I'll recommend MS Virtual PC as WMWare is difficult to understand for newbies.
Thanks for the ISO file buddy

Update:
Can you post a torrent link?