Is Mocha mandatory or is being on CBHC enough?
not sure about you , but im scared for you , play safe first , follow this tutorial 1st.
backed up and themed is better than theme'n and screwing up left with nothing... learn and practise safe ;-)
http://www.hacksden.com/showthread.php/8119-Compiling-a-vWii-compatible-version-of-SNEEK