title: how do i setup ubuntu desktop in ec2
body: <p>Been playing around with amazon ec2, so far I've been able to get ubuntu-desktop working  (once) although it was a random set of hacks from blogs 
  ive not been able to reproduce what made it work</p>
  
  <p>my setup
  windows box w/- putty, NX-Nomachine, 
  amazon:ubuntu 10.04 lucid ami
  when i launch NX i can see the nicely rendered terminal window inside the desktop viewer, on a plain black background. previously I had tried
      sudo aptitude install ubuntu-desktop
  but im unclear as to what steps are needed to view my new desktop within my image.
  when i try start x - i get a user not authorized to start x-server..aborting
  i've also noticed errors like 'xf860penconsole cannot open dev/tty0 [no such file or directory] ' and 
  '
  any thoughts about what this might be ?</p>