here are some links with Emulators For NDS Roms:
DeSmuME Emulator:
http://www.robsgames.com.nyud.net/nds/DeSmuME-0.9.6-Win32.zip
Ideas Ds Emulator:
http://www.ndsbackup.com/files/iDeaS.zip
DSemu DS Emulator:
http://www.ndsbackup.com/files/DSemu.zip
DeSmuME Emulator:
http://www.robsgames.com.nyud.net/nds/DeSmuME-0.9.6-Win32.zip
Ideas Ds Emulator:
http://www.ndsbackup.com/files/iDeaS.zip
DSemu DS Emulator:
http://www.ndsbackup.com/files/DSemu.zip