How to dual boot Windows 8.1 and Ubuntu 13.04 with Windows Metro Boot Loader

I'm having a laptop with 4 Partitions,

[1] 350 MB Windows System Reserverd
[2] 40 GB for Windows Installation
[3] 25 GB for Ubuntu Installation

[4] 400 GB for Data Storage

I have installed Windows 8.1 on my BIOS (non UEFI) based laptop on Partition [2] and booted successfully.

Then I put the fast boot off and installed Ubuntu 13.04 on Partition [3] using Live USB Key and on reboot GRUB Screen Appeared with the options to boot into either Ubuntu or Windows and both are working perfectly.

Now the issue is, I do not like the GRUB Interface and want to replace it with Windows 8.1 Metro Boot Loader. Can anyone help me replacing it with the same ?

Kind Regards