If you ever need to reinstall your Grub loader, here is how to. If for some reason you need to re install your boot loader GRUB

try this.

Boot with your First CD, or your live CD, depending on what you have

Once you have the prompt go with this.

grub

root (hd0,0)

setup (hd0)

quit

exit

You need to chage hd0 and the hd0,0 for anything your system needs.

hd0 is the first disk on the system

hd0,0 means the first partition of the first disk.