Well the Operating System is Ubuntu 12.04 x64. How ever the Desktop Enviroment is not the default it is Gnome-Shell. The default Desktop Enviroment for this OS is Unity which means you will need to install Gnome-Shell post install. Then you can download all the theme parts I have listed for this setup. Here are some linx you may find useful to download and install Ubuntu 12.04. I will also include links for burning a ISO image after download as well as links on installing Gnome-Shell. If you are new to Linux I would also suggest you join the forum in the event you need further help with this.
Download and Install Help: [link] ( Note: Once you click this link make sure to choose the architecture of your PC ie. x86 or x64 which means 32bit or 64bit.
Yeah, it wouldn't start. Which made me unable to use gnome-shell properly. Tried several things couldn't fix it. tbh it doesn't matter anyway since it was kinda slow on my laptop too so I would have ditched it anyway.