Open Terminal
type: sudo nano /etc/fstab
Simply add the line to create a booting mount point, somthing like
/dev/disk /media/mountpoint ntfs-3g defaults 0 0
Though you'd replace 'disk' with your device name and 'mountpoint' with the folder you want to mount into.
then do sudo mount -a to force a remount of all the disks and your drive should then be mounted.