How to play wads from Wii system menu?

[Kilerbomb]

I have some wads, and I've installed them to the Wii menu. However, when attempting to launch them from within the system menu, they don't load. I can launch them from the games list just fine, but not through the system menu. I'm guessing there's some modification I need to play them on the menu? I've searched around and haven't found any solution. Any help will be appreciated. Thanks in advance!