Hi RAZD, I've noticed your PNT. I've done a bit of research in this field recently, and thought I'd bring it to your attention. My studies are currently on the formation of organophosphorus species (DNA consists of three pieces- a nucleobase, a deoxy-ribose sugar, and a phosphate bridge) and their biological relevance.
A press release can be found here:
Geotimes - November 2004 - Impacting the origin of life
and our paper is in the journal Astrobiology, number 5(4).
Enjoy!