No, you can't get points back for the game you downloaded.
No
Nintendo Points was created in 2006.
You can redeem club nintendo points for DSi/Wii points, yes.
In most areas, Nintendo Points Cards only come with 2,000 Nintendo Points. In Japan, however, it is possible to buy them with 1,000, 3,000, and 5,000 Points as well.
No.
no
yes you purchase them using Nintendo points you have to buy Nintendo points at the Nintendo website
You cannot earn Nintendo Points. You have to BUY them with your own money.
no
You have to receive a Nintendo Points Card for Wii and entering the code on the back. (scratch it off first) or you have to buy it.
i am not farmiliar with star points but i am a member of club Nintendo and i have a dsi but if star points are what i think they are then no you cant
They still sell wii points even though Nintendo points are out(for some reason). So I assume you can.