Following package need to be installed.

 - /usr/ports/sysutils/fusefs-ntfs
 - ntfs-3g - which is installed as part of fusefs-ntfs.

Edit /etc/rc.conf and add following line.

| /etc/rc.conf

fusefs_enable="YES"

Now start fuse before mounting NTFS

/usr/local/etc/rc.d/fusefs start

Before mounting make sure following directory exists.

/mnt/cldrv

Now mount drive to that folder

ntfs-3g /dev/da0s1 /mnt/cldrv

Congratulation !! you just did it

If you need more detail follow linux config