Not quite sure if I am an idiot or not but I just purchased a 7 string for korn and other deep tuned bands but I am not seeing a 7th string. I was not sure if I am doing something wrong or I am missing the point somewhere. Any help would be appreciated because I just drop like 200 bux on this thing.... Ty!

If i understand correctly (i didn't try yet with a 7 string guitar) on rocksmith you'll see 6th string displayed as always but probably you'll play with a low tuning that included your 7th string instead.

Did you try to pass the tuning  with a 7th string custom?

Tron001 is correct. Instead of being tuned EADGBE it will be BEADGB. Rocksmith doesn't support 7-strings but it does support low tunings, so nobody is stopping you from using a 7-string to play in those low tunings.

OK so no extra color string will show up for the "B" but I should tune it to BEADGBE anyways? I tried several Korn songs but not only did I do horrible but the lowest string wasn't present and was out of tune. Thank you for your help!

Most Korn is ADGCFA(D)