Recently I installed Windows XP on my machine where I had only Ubuntu. The problem is that I had my /boot on a separate, 200 Mb partition at beginning of the hard-disk (the leftmost). Installing windows, it said that it can't write MBR because there's an unknown partition, so I formatted that partition as NTFS, and I could finally get windows installed. Now I want to restore that partition so I can use my Linux keeping both systems.

Now should I install grub2 there, or it's OK by restoring partition data? If the first is the correct answer then provide me a little tutorial on installing it. Keep in mind that there was my /boot folder.