This video shows you, very simply, step by step how to get the TLP hack working on a regular Wii.
I take you through the steps from formatting an SD card to loading up your own WAD files. In this case I load a WAD I made with an injection version of Chrono Trigger.
If you want to learn more, visit http://wiibrew.org/
This is just showing that the issue with the Dr. Mario WAD being blank is simply because the banner file was left that way.
I decrypted my WAD, made the appropriate changes with BannerTool and then resigned/packed it. Now I have a title for my channel and my WAD functions perfectly.