I need to take a running windows desktop box that's part of a domain, give it a new computer name, and then continue working on it (with the box having the new name), without having to reboot at all.

When you're tinkering wiith home networking or you need computer support, you'll want to know your PC's name and if it's Windows Home or Pro. Here's how to find the info fast. Dong Ngo Former SF Labs ...