Suppose you want to mount your /dev/hda1 partition to your /mnt/windows directory, (It may vary depending upon your system)
login as root and add this line to /etc/fstab file
/dev/hda1 /mnt/windows ntfs ro,umask=0222,user,gid=users 0 0
Check if it gets mounted correctly by these commands in console
mount -at ntfs
If you see the contents, your work is done.