Installing GRUB after installing Windows
Windows is THE most popular OS in the world... It is also the most unfriendly to other OSes. One common problem that affects people is that when they install Windows after Linux the GRUB bootloader is overwritten. So the poor chap often ends up reinstalling the whole of linux... The following post by David Mooney on xubuntu-users mailinglist tells you how to reinstall GRUB without all that circus..