it's illegal by Nintendo but when you use the Wi-Fi connections,
you can use internet and other soft ware by upgrading the ds.
First, you get the R4 and connect to your computer, then search
more about the msn installation for DS, you are upgrading DS
illegally then connect to internet. then use msn... so... yes! you
can upgrade or upload to DS with R4 as iPod,TV,free game
downloaded,and more....