D800 is here..

[rirakuma]

which version of ViewNX?

if you have a 64bit PC, is your version of ViewNX v2.3 or greater and 64bit?
It does work than the older versions, and any version lower than v2.3 won't recognise D800 files anyhow.
Your CD(in the D800 box) should have v2.3 at the least ... possibly v2.3.1(latest version).

Just checked and I only have 2.2.1 haha. Im using a 64bit w7 so I'll update it when I get home. I much prefer using viewnx to transfer than copy and paste from the card . Btw Im using some cheap sandisk SD card and the write time sucks, I'll get a proper CF card soon.