dance dance revolution circuit mode?

Before I owned my own DDR a friend brought hers over and played on my wii console, now that I have my own I am unable to start my groove circuit from the begining bc my internal memory has saved her information (and completed stages) to my internal memory. Is there any way to reset the DDR to the original default settings without wiping out my entire internal wii memory?? Any help would be great, THANKS!!