I use ControlMyNikon for this. Amazingly, it costs only $19 and it's a breeze to set up. I actually run it on my MacBook in a Windows virtual machine, and it does the job. I use it for other things, but certainly the LiveView works as you wish.
On the other hand, do you REALLY need to use the laptop? I usually zoom the LiveView display and that is easily enough to get very precise focus. (Usually I'm focusing on architectural details through a perspective control lens, meaning that those details are usually quite small in the frame.)
_____ Brian... a bicoastal Nikonian and Team Member
My gallery is online. Comments and critique welcomed any time!