1. First of all you need to install this program, if you dont allready have it.
When you open Software Center, you want to click "Find additional applications from the Application Catalog"
You search for "WinSCP", click on it and install.
2. When the program is installed, you want to follow this ( http://www.uio.no/tjenester/it/nett/utenfra/hjemmeomrade/windows/winscp/ ) guide to log in.
3. After log in, you will see something like this :
On the right side, you should be able to see you files and directorys. You will also see the column with rights.
4. If you want to change the premission on a file or directory, you can do this by right click and choose "Properties"
Here you will be able to change the read, write and execute.