First you will have to set up a .gct file
1. get wii cheat code manager: EDIT:http://wiird.l0nk.org/ocarina.zip
2. next get the dynamic SD loader code (take NTSC if you live in America, PAL if you live in Europe and NTSC-J if you live in Japan)
3. Copy it into the wii cheat code manager: click add code/category/comment, give it a name, and copy it in the box "code contents"
4.click Export to GCT, store it in (SD drive):\codes\RSBP01.GCT if you live in Europe, (SD drive):\codes\RSBE01.GCT if you live in America and japan i don't know
now, you will need to put the texture file on your SD card
i presume it is for a fighter/character.
put it in (SD drive):\private\wii\app\RSBP\pf\fighter\(fighter name) or (SD drive):\private\wii\app\RSBE\pf\fighter\(fighter name), call it Fit(fighter name)0#.pcs or Fit(fighter name)0#.pac
# can be a value between 0 and 5, or between 0 and 9 if the character is Wario
here you can find the character names:
http://forums.kc-mm.com/index.php?topic=6.0hope this helps!