so i just hold on to the 7th fret of the 6th string? and compare it to the A String? and do the rest like regular tuneing, (going down a string to the 7th fret each time) wouldnt that make a higher tone?

cause im trying to do 96 quite bitter beings by CKY, and a friend told me i have to drop d tune, to make it sound alike, is that true?
if its not, please tell me what to do.
-if this sounds noobish, i'm sry, im new :) -