using other avatars as Mii's

[gooseg]

I was hoping somebody could point me to a utility for bringing in non-Mii avatars and using them in Mii contexts.
Specifically, I'd like to use the little guys I've created at Simpsonizeme in Wii games - wouldn't that be awesome?
The interface is so similar, it seems like there ought to be a translation out there...

And please don't ask me to "search" - I've searched the forum with no success (I have limited imagination in search terms, I guess... - but then, my keys are often in my pocket when I can't find them...)

Thanks

 

[Syntax]

I'm sorry but I don't think it's possible to use other characters such as the ones you made over at simpsonizeme.com as your Mii.