Linux is easy to maintain. It is not maintained the same way Windows is maintained.
There is, for instance, no way you will ever read data from ext4 on a Windows OS. One of the things I like about ext4.
Do you have;
packages installed. Ntfs-3g is the driver for reading ntfs files. Hard to get things to work if you don't have that. This is, however, a default install on almost all installs from all distros. But you should check that.
Post the results of this command, run as root;
from that we can put the MS partition in the fstab file and have it mount on boot up.
You should be able to see, from that command what "device" that partition is.
Running, as root;
and then, again as root;
mount /dev/sdxy /media/Win
where x is the drive and y is the partition should mount the bugger on /media/Win.
Running, as root,
chown -R 1000:1000 /media/Win
will give you, as user, ownership of anything mounted in that directory assuming you are workign as the first created users (during the install of your system).
That includes system files you can't even look at in Win so don't delete them by accident. This is not hard to avoid but the warning does need to be given.
Linux has been the choice of Win system rescue disks forever. Still is. Those disks all run as a single user system, just root, so this is not uncommon to do. A lot of Win users run as administrator and think they can do anything. They can't but can still completely screw their system. You can as root on your Linux install.
If you chown that directory, which I would surely do, when we put the thing in the fstab file it will not be neccessary to do anything else to access the Win system from Thunar at any time once you have rebooted so that root can mount the system from that fstab file.
I have a Debian 7 installed on my Dreaded Mother in Laws computer, Vista is on that box as the OEM install. It is in the fstab file so I could back up her files, mainly photos of grandkids and friends, on a safer Linux formated partition.
While Vista is still on there, I removed the menu entry for it custom menu entries). She is running Debian 7 now. Vista will be removed when she is sure she is not having troubles with Debian. I have been sure for some months now but I am not in my late 70s yet either as she is.
Your configuration of Thunar looks fine, not sure why a file system on an internal drive is not being mounted. You should see it in Thunar and be able to click on it and get a prompt for the password for root (only root can mount file systems), give it and have it open. Pain in the ass but it works.
Putting it in the fstab file is the way to go.