Yes it is legal, but the things you can do are illegal such as running "roms" on the R4 is illegal and downloading the roms for free are too.
I think it is.
R4 cards are legal until you download non-homebrew NDS roms They're illegal to sell in New zealand, but u can still use them
this amazing device is legal. but do not download nds roms for that is called piracy and may arise some serius problems. seriusly. p.s. sorry about the spelling im in a hurry.
Games-engine or hkorz
no not unless u hack the files that run the r4 firmware (which would be v hard)
Once you download the game you want to play, unzip it and look for the .nds file. The .nds file should be drag-and-dropped into the Micro-SD card put into your R4. Rhe3n you can play it.
only way is to down load and put it in your r4 for nds
Yes, its the .nds file that you need to extract to your R4's memoryyou could downland the win rar and download it from there
Hkorz has loads of games and is really simple.
Buy yourself an R4 and download the nds file for it ;D
R4 Gold is the newest type of r4. It works on nds, ndsi and ndsixl. you can download games, movies and music onto it. There are many r4 gold card in the market currently. Most of them can run games and medias on Nintendo 3DS,DSi and DS cosnole. Such as r4 gold 3ds card from r4ids.cn, r4 gold v2.0 from r4ids.com and so on!
Well, I don't think you can buy it in stores, but you can try online:http://www.buynowmobi.com/New-Standard-Edition-R4-SDHC-Revolution-for-DS-NDSL-NDS