For computers, hardware and software can be separated in a way that is not possible with humans (with current technology). When the separation is possible, I agree personhood should be attributed to the software rather than the hardware, so your machine should not be considered a person. If in the future it becomes routinely possible to scan, duplicate and emulate human minds, then killing a biological human will probably also be less of a crime than it is now, as long as his/her mind is preserved. (Maybe there would be a taboo instead about deleting minds with no backup, even when they are not "running" on hardware).
It is also possible than in such a future where the concept of a person is commonly associated with a mind pattern, legalizing infanticide before brain development seats in would be acceptable. So perhaps we are not in disagreement after all, since on a different subthread you have said you do not really support legalization of infanticide in our current society.
I still think there is a bit of a meta diagreement: you seem to think that the laws and morality of this hypothetical future society would be better than our current ones, while I see it as a change in what are the appropriate Schelling points for the law to rule, in response to technological changes, without the end point being more "correct" in any absolute sense than our current law.
A few notes about the site mechanics
A few notes about the community
If English is not your first language, don't let that make you afraid to post or comment. You can get English help on Discussion- or Main-level posts by sending a PM to one of the following users (use the "send message" link on the upper right of their user page). Either put the text of the post in the PM, or just say that you'd like English help and you'll get a response with an email address.
* Normal_Anomaly
* Randaly
* shokwave
* Barry Cotter
A note for theists: you will find the Less Wrong community to be predominantly atheist, though not completely so, and most of us are genuinely respectful of religious people who keep the usual community norms. It's worth saying that we might think religion is off-topic in some places where you think it's on-topic, so be thoughtful about where and how you start explicitly talking about it; some of us are happy to talk about religion, some of us aren't interested. Bear in mind that many of us really, truly have given full consideration to theistic claims and found them to be false, so starting with the most common arguments is pretty likely just to annoy people. Anyhow, it's absolutely OK to mention that you're religious in your welcome post and to invite a discussion there.
A list of some posts that are pretty awesome
I recommend the major sequences to everybody, but I realize how daunting they look at first. So for purposes of immediate gratification, the following posts are particularly interesting/illuminating/provocative and don't require any previous reading:
More suggestions are welcome! Or just check out the top-rated posts from the history of Less Wrong. Most posts at +50 or more are well worth your time.
Welcome to Less Wrong, and we look forward to hearing from you throughout the site.
(Note from orthonormal: MBlume and other contributors wrote the original version of this welcome message, and I've stolen heavily from it.)