SD:/apps/ <----------- You put Gecko there.
SD:/codes/ <---------- You put codes there
SD:/Private/Wii/App/RSBE/Pf/Fighter <-----------You make character folders there, which are listed in the link below, but just in case, an example:
SD:/Private/Wii/App/RSBE/Pf/Fighter/marth/ <----That'd be the folder where you'd drop the Marth stuff (Textures).
http://www.smashboards.com/showthread.php?t=225642Follow the link on the bottom to get to a guide with the Codes which you need to compress into RSBE01.gct and for this you could need to download:
Code Manager:
http://www.smashboards.com/showthread.php?t=225642You copy the codes from:
http://www.smashboards.com/showthread.php?t=225642into a Notepad (.txt) and open the said notepad with Codemanager and:
>Check the codes you want
>Set the Game ID (For Brawl it'd be "RSBE")
>Export to GCT and save it as "RSBE01.gct" in the folder I mentioned above.