Using windows partitions in Ubuntu is no problem, however if you need to rely on a stable mount point you will want to add ntfs-config.
If while playing around with this you lose the partitions and then can't see them listed any more in the "New Partirions Found" popup when you load ntfs-tools you will need to clean your /etc/fstab file.
Be careful to only remove the windows mounts, these will have "ntfs-3g" written in the line.
$ sudo apt-get install ntft-config && sudo ntfs-config
If while playing around with this you lose the partitions and then can't see them listed any more in the "New Partirions Found" popup when you load ntfs-tools you will need to clean your /etc/fstab file.
$ sudo gedit /etc/fstab
Be careful to only remove the windows mounts, these will have "ntfs-3g" written in the line.