That was silly of me. You're right once again SS. Really, I'm serious, not patronizing you.
These are the basics
http://www.ndt-ed.org/EducationResources/HighSchool/Electricity/circuitdiagrams.htm
This is a database of schematics
http://pcbheaven.com/circuitsarchive/
And these are...
I like it! For the next version, consider using car filler like bondo to fully integrate the Gamecube parts into the GBA. But that's what first mods are for!
I have a question: Is there a time limit on when we can submit completed projects? I know there's a deadline but let's say I finished something four years ago. Can I enter that?