Dual hardware configs

I have a laptop with windows 2000 on it.
I have a small home ofice with a router and 4 PC’s running Rogers @home service.
My main office has a network as well.
My problem is that I need to be able to use the home network with DHCP and the work group as @home….and the main office setup uses a static setup with the group name as Javelin. How do I set this up?