What am I missing/doing wrong on my new DSTWO?

I just bought a DSTWO from an authorized dealer.Got it, followed the brief instructions that came with it.Here's the directions:
http://eng.supercard.sc/manual/dstwo/use.htmI downloaded the operating system and put it in my microSD's root folder...If I try to start it, the DS reads it as a regular Fish Tycoon game (don't recall ever getting that ROM?????) and it will go to a menu, but when I click on DS game, nothing happens.Any idea? Do I need a separate .nds folder within the _dstwo folder???Thanks

Is it like that for every game you select?

I added a few ROM's and MP3's all to the one _dstwo folder, as everything on the OS download came in that.There was not any Zoo/Fishing Tycoon, never has been. And I can't get any DS games or the MP3s to appear.My m3 had a .nds folder and .mp3 folder, might this cart as well?

Try putting them in a different folder and try reformatting your SD Card. You're supposed to whenever you get a new one anyways.