Awhile ago my sd stopped working, and i had to get a new one, now i don't have those files, and when i put new ones on a new card nothing appears, i know I'm missing a file or something. ???
When you want homebrew to show up in the HomeBrew Channel you need to put the folders with them in SD:/apps
So your when you want Gecko you will have at least this:
SD://apps/Gecko/boot.dol