DeSmuME Emulator is the first Nintendo DS emualtor. That can run all Nintendo DS ROMs. you can download the emulator for Windows 32 and 64 bit systems.

Download DeSmuME Emulator
file | platform | license | size |
---|---|---|---|
DeSmuME | Windows (32-bit, 64-bit) | Freeware | 1825 Kb. |