The Code of the Atlanteans

Crack the code of the Atlanteans, and the first to do it gets 100 gift points.

Key: A=1
B=2
C=3
D=4
E=5
F=6
G=7 WE WILL RULE THE WORLD TO THIS VERY DAY, WHICH MAKES US A PART OF THE
WORLD WITH AIR!
H=8
I=9
J=10
K=11
L=12
M=13 When you are done, send me an e-mail so I can confirm your 100 points!
N=14
O=15
P=16
Q=17
R=18 _______________________________________________________________________________________________
S=19 Input your attempt to crack the code above
T=20
U=21
V=22
W=23
X=24
Y=25
Z=26 (CRACK THE CODE IN NUMBERS) (go UP)