You said some key words that jumped out at me. You want to play imports on your console. When you load neogamma, go to one of the settings (dont recall what actual setting its called) but it has to do with region. The default setting should say disc. Change that to wii. If you have a sd card in the wii, change save config to yes, and it willsave your settings.
Dealing with the sb loader, someone else will need to help you because I dont use that at all. sorry.