It seems to me that, epistemoloically, consciousness being what it is, the only way to know whether a computer was conscious would be to actually be the computer.
On the other hand, we do ascribe consciousness on a regular basis to beings that have very different experiences than us, all the way down to insects.
_________________________________________________________________ Set yourself up for fun at home! Get tips on home entertainment equipment, video game reviews, and more here. http://special.msn.com/home/homeent.armx