I've got friends that have cracked it and are running the latest version for free. There's an outlaw site called Valdez or Juarez or some such.
I'm not in favor of such and don't run their cracks. But after my last go-round trying to move my LEGAL software I was very close to saying screw you and running the crack. In the end though my AutoCad LT 2005 ran so I was happy.