Did you seriously think about installing that thing?
Yes,I looked it up on Wikipidia but I don't think it will work on Windows 7,Windows 8 or Windows XP. It could mess up the system if I tried to install it.
Those clay abominations from XP were killed off because they are a visual equivalent of getting herpes.
The point of a desktop is to have something nice in the background.
A visually messy interface is noisy and has a massive amount of detail which causes unconscious stress and makes you dumber (thank you Cracked.com)
The point of an OS is to have a simple, elegant and highly functioning environment to do anything you please to. Beauty, Simplicity, and Focus are the keys.
Ergo Windows 8 is the way it is. It is visually SIMPLE, relaxing, etc. It also manages to maximize your productivity.
Windows 7 reached the climax of start menu design - there is simply no where else to go. It combined tools, controls, and the ability to search and launch applications.
Windows 8 start menu is simply an extension of that. Because Windows 7 introduced the ability to PIN applications - Windows 7 start menu got little love as simply it was seen as an extension of the task bar's pinning ability.
Additionally, system settings that are on the W7 start menu do not get much love as once the settings are solidified to the user's liking - there is no need to mess with them. Users realized how much of a pain it is to search through legacy menu structures to find their applications - ergo pinning and WINKEY + Firefox + ENTER type things. The death of the W7 start menu was inevitable from a design perspective. For example, W7 start menu gives access to shut down / hibernate / restart - but again as W7 is rock stable these do not get used much - besides the big power button on the PC case may be simpler to press.
W8 start screen is simply that which is accessed frequently presented in a visually uncluttered flowing method.
What you are trying to do is kill off the elegant mistress of GUI design, give her corpse a gender reassignment surgery, mutilate and reanimate the corpse, and try to get it working as a swimsuit model.
You know what I have on my W8 desktop? A wallpaper. Technically 173 wallpapers shuffling every minute.
Also Windows 8 is significantly faster than Windows 7. UAC is a driver level service which prevents executable code from modifying system files without elevation.
IE10 is way better than IE9 - please read the official IE blog if you do not know this. IE9 is significantly faster than IE8 and better looking too.
IE6 is one of the worst plagues ever invented. Trying to tell people that IE6 is in any form "good" is like justifying having no cellphone.
Also, you can simply live with XP and IE6. There is the Way Back Machine for IE6 compatible internet.