When Nintendo re-released classic games on the Wii Shop Channel, they delivered them as encrypted WAD files. These files install directly to the Wii’s internal memory (or an SD card) and appear as fully functional channels on the Wii Menu. No disc required.
Creating a working "Donkey Kong 64 Wii WAD file" was not as simple as packing the ROM and hitting "go." The Wii's Virtual Console emulator for N64 games was designed primarily for standard titles. DK64 was a special beast. donkey kong 64 wii wad file
Installing any WAD file carries a risk of your Wii if you install a WAD designed for another region (e.g., a Japanese WAD on a US Wii) or a maliciously modified WAD. Always: When Nintendo re-released classic games on the Wii