I manage to install HBC into my vWii (Wii U, US set).
This is the HBC I used> http://bootmii.org/download/?varnish=sucks
I tried to install d2x but failed.
I used the d2x-cios-installer method mentioned in http://code.google.com/p/d2x-cios/
d2x-v10-beta52-vWii.zip
This managed to get to the...