Nintendo DS Question

[Saiyan Destroyer]

I have the old DS (the fat not lite DS). I have Diamond. Is there a way to make the fat DS able to go onto the GTS For Diamond or do I in specific need a DS Lite. It'll be bullcrap if that's a DS Lite exclusive.

[-Batman-]

I have the fat one, I got on just fine.

[Saiyan Destroyer]

Hmmm I wonder what I need to do to get on WiFi sime the place I goto has Wi Fi.