2012.12.31 cat /etc/grub.d/40_custom

$ cat /etc/grub.d/40_custom
#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
menuentry "Windows XP" {
insmod ntfs
set root=(hd0,5)
chainloader +1
}