No, 3DS games are region locked.
Yes. To ones to watch out for are the "J"codes sold in Japan. They may not work.
It Should!
Regular Nintendo DS games are not region locked, a UK one will work on a US DSi.
Nintendo WiiWare is software bought from Nintendo's Shopping Channel on the Wii and downloaded to the Wii. It includes stand-alone games as well as Virtual Console games.
Yes, the Nintendo DS and DS games are not region locked.
no.
keep on playing the games that you bought on nintendodsi and you will earn it
No. They are bought and downloaded from the Wii Shop Channel.
Yes most Nintendo DS games from the US will work on European Nintendo DS systems. However if the game is a DSI enhanced game then it will not work.
Funds is the money you've loaded onto your account. You can do it with a credit card, or with Nintendo Points Cards bought at games stores.
Yes, they will work since DS games are not region locked.