I would start by identifying your drive chip at either
http://wiitracker.nintendo-scene.com/search.php or do a google to get a rough idea what drive chip you have according to your serial number
Then open the wii to double check i left mine unscrewed at this point and just clipped everything back together and taped it shut
check your options at
http://www.wii-clip.com/ for your drive
choose a chip
youll need a presolderd wii-clip otherwise youll have to solder the chip into the clip. The D2Ckey hasnt failed to boot around 50 wii titles and about 10 GC titles from variouse regions the only catch is it is technically dead as it has no udate features but was the only option at the time. I would probably go for an updatable chip nowdays
when you install it you have to press quiet hard but make sure you have it aligned correctly i had to refit mine as i was being too cautiouse and it didnt click on tight enough so booting was tempermental.
I also left out the cardboard part as i wasnt that keen on the idea and just coverd the chassis with insulation tape this also allows better airflow around the chip and drive
Burn your backup and use brickblocker if concerned about bricking
http://wbb.rockman18.com/?page=home&ln=enwhen your satisfied everythings working correctly screw it all back together
I really cant fault the D2Ckey as it hasnt failed me yet