Gecko os help please

[wii1162]

Hey everyone im new here

ok i just downloaded the lastest version of gecko os
and i opened it and noticed there are two folders one is DOL and one is HBC
i am just wondering what's the difference between two of them? and i dont know which to use since my usa wii is modded with wiikey
 
plus also will my modded  usa wii with wiikey able to load gecko os and my wii runs on 3.2 firmwire.

[Romaap]

they're the same, the HBC folder has the .xml and icon for use with the HomeBrewChannel