RowanDDR:
You can also run DS ROMs from a supercard (public domain ones ...of course) if you have (a) flashed your DS BIOS with FlashMe, or (b) own a slot1 PassMe type card. Its a bit of a pain though because after all that, you still need to patch your DS ROMs before they work.
yep yep

Though, I'd advise this ONLY as a cheapo method
Definately best with one of these and and a slot1 card combo! Not expensive, plus two slots for storage of roms
I can remember doing flashme for loads of friends. These flashcards were about £60 then! The resellers took some SERIOUS liberties. Nice to see sites like DX making it impossible for them to make such a fast buck.