if you want to "get rid" of Grub, you can use dd to copy a bunch of 0's to the MBR, but I bet you don't want to do that ;p Anyway, my best recommendation would be to boot to linux and type "info grub" ...
I installed a Linux distro along with GRUB a few months ago. At this point, I want to remove it from my HDD and just boot straight into Windows. How can I restore/fix the MBR to the Windows ...