Help with wifi on Phantom Hourglass? Please.

[Wii_Master]

Ok so on my dsi i have been having this problem for the past few eeks now. Haven'yt called Nintendo yet.

ok so everytime i go to the internet it works really really fast. it surprises me. then i feel like playng phantom hourglass online but the wifi just won't work even when its showing with full bars. what can i do. I tried putting it maually and automatically but nothing works.

 

please help.