I tried the rotary phone and cell phone letter patterns back in the beginning and got nothing.
Then you should maybe read this post
Congrats to Lexor for figuring it out!
If no one is against I'll post solution for this code later today, ok? :)
BTW: do not forget we still have one more valid code to solve it in this topic.
I won't be giving it a go because
A. I still have my Duke 3D CD
B. It looks like an absolute bitch
C. All the talk of Genetic sequences brings back bad memories of me dropping out of BSc Biology a decade and a bit ago
Good luck to everyone else though!