The wubi installer that comes with Ubuntu 12.04 doesn't allow one to install ubuntu within windows. I downloaded the Wubi installer available here Ubuntu Windows Installer
This howerver doesnt allow me to install with the existing image that I downloaded earlier. It downloads ubuntu afresh prior to installing.
Is there a way to install it with the existing CD image and WITHOUT use of an external CD/DVD (too lazy to buy one :P)
I used to be able to do this with the earlier versions of Ubuntu just by mounting the CD image as a drive in windows... and the installation would complete in minutes!