Here is the simple method to enable read write access for your NTFS file system on your Ubuntu Box. This method uses ntfs-3g which is still in beta. You should not use it on production machines.
First enable Universe repository
Then in your terminal type
sudo apt-get install ntfs-3g
You can view the partition table by using this command
sudo fdisk -l
Then in your /media folder create new mount folders. This is where your filesystem will be mounted. Then make a backup of the /etc/fstab file and edit the file
sudo mkdir /media/windows
sudo cp /etc/fstab /etc/fstab.bak
gksudo gedit /etc/fstab
Append this line to the fstab file, by substituting the respective drive name. This should be done for every drive in your system.
/dev/hda1 /media/windows ntfs-3g defaults,locale=en_US.utf8 0 0
Save the file and reboot the system. You can however mount them without reboot by issuing this command.
sudo umount -a && sudo mount -a
This would unmount all your file systems and again mount them.