Here's an article from January explaining how data storage using DNA has already been done.

http://www.guardian.co.uk/science/2013/jan/23/shakespeare-sonnets-encoded-dna

On 06/13/2013 12:49 PM, Matt Graham wrote:
(Part of the problem with doing stuff with DNA is that genes from bacteria to
mammals appear to be optimized for space, not clarity, and all the comments
have been stripped out.)

-- 
"I get my copy of the daily paper, look at the obituaries page, and if I’m not there, I carry on as usual."

Patrick Moore