Leaving a domain and joining a new domain
We've moved to a new school building with a new Windows 2008 R2 server. The old server has been retired and is no longer in use. We have a new domain with a new domain controller, and pretty much new IT kit - so new desktops and netbooks which can be joined to the new domain straight off, no problems there so far.
We also have a few Windows XP laptops which have been brought from the old site and I'd like to get them on the new domain too. They currently point to the old domain - which confusingly has exactly the same name as the new domain.
Can someone point me in the right direction for how to disconnect the laptops from the old domain and get them joined to the new domain? Google is surprisingly unhelpful on this.