i recently installed drivekey. i don't think it was the updated version. my question is when i put in nsmb, the disc shows up as nsmb, then starts to load, but very quickly returns to the wii menu. is that what the problem is with nsmb?
Yes, you will need an updated Drivekey or you will have to softmod your wii.
New updated Drivekeys are for sale and older versions will have to wait for the update to come for the JTAG.