Since it is not possible to pay your taxes due to NC at the time you file (NC doesn't allow it)
.....then you have to either pay by check with the D400V by mail
OR
use the NC payment site instead....either way is acceptable:
http://www.dornc.com/electronic/d400v.html
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*