Yes, they will more than likely have the anti-piracy coding that the Japanese and Korean games do. 99%+ chance.
Yes you can by using your WIFI connection and you need some software on your DS and PC to do it http://www.monroeworld.com/myfaq/index.php?action=artikel&cat=7&id=85&artlang=en
But dsi's can't dump games, only ds phat/lite models can. The dsi blocks out the wifi on the dumping apps.
I know that but as far as I see it the DSI is not a Nintendo product to me because it has 2 stupid camera's on it and they are better protected against us hackers so everything that has got to do with DSI is not interesting to me and I won't mention it .
I remember from before that this user is using a dsi, hence why I mentioned it, otherwise I would have mentioned about the ezy 3 in 1 version of the ds dumper which i personally use. And I agree with nintendo's stance on piracy, they need money to make new consoles and games you know