When you cannot get it to run on your Wii try the Emulator on PC.
Plays better with the Xbox360Controller on PC than with the Wiimote on Wii (in my opinion).
EDIT:
Use ModMii to update to FW4.2. All needed wads get installed/updated! You don't have to be on FW lower than 4.x anymore. Follow ModMii-guide...
After that install Sonic 4 with MMM or Wad Manger 1.7 or YAWMM.
Thanks, I read the post. I did the NUS thing, but I get an error when I try to install the WADs. I made a post in the other topic, can you help me there?
"Members may NOT ASK and MAY NOT PROVIDE INFORMATION or LINKS for and to places that provide ROM, WAD, ISO and CIA files in absolutely any way on our forum including PM (private message)."