A code you must break if you want to know a truth about me!

As the Da vinci Code's screening comes near Here's a code for
all of you to break, the secret ( atleast to my friends )
would be as great a shock as given by the book !

I m publishing a moded photo previously published on
optickarma you have to find the number of differrences
and take that value as a now take this verbal eqution:

tan ( sin inverse of root [1 by a] )= b = c divided by 8

here c is the key to the caesars square given below:


c h f & s e
b y l b y c
u q c y c n
p a y l m u
y c h h h !
u l x u c !

( arrange in 6 x 6 grid )
( the number of letters in the words [total 9 ] 1,4,1,9,1,3,4,2,6)

{c is a single digit,the * represents a word break but are not a part of the
caesar's square, the vert = horz it may help to form the sentence, the
symbols are not to be changed }

the first friend to decode will get a nasty shock and he'll
be scratching to tell this to others !

lets give another hint to you about the nature of the secret
" it happened online " " its related to me and another
entity " " you 'll be thrilled "

If you are searching for the right key words from my
search bar ie on my site you'll have very little
difficulties !