This is the .dol for New Super Mario Bros Wii game. I hope it helps you!
All you have to do is copy this to your SD card (for your wii) and depending on what you use, see how it works out. I use Neogamma so I would place it in the Neogamma folder on my SD card (Not the one under apps).
To make it work, allow searching for patches and alternative .dol's on your loader.

By MastermindTTA