Thanks but I already had Googled

The above guide too concludes with :
If instead of GRUB you want Vista's bootloader to be in charge, load up the Vista installation and install EasyBCD. Go to “Manage Bootloader”, then “Reinstall the Vista Bootloader”, an GRUB is overwritten. You can then configure the Vista bootloader to add Linux to the boot menu.
See I want Step by Step instructions on how to do that ^^ !