SBC home portal, DI-624 Wireless Router, laptop home and office connection question.

Hello,

I have a laptop that's configured to work wireless in my office in a
small lan on a DI-624 wireless router. The settings for my laptop in
the network configuration section are:
ip address: 192.168.254.201
subnet mask: 255.255.255.0
default gateway: 192.168.254.254
pref. dns: 64.105.132.250
alt. dns: 64.105.166.122

I have purchased a DI-624 wireless router for home. I am intending to
setup my laptop to work at home as well. I have an SBC home portal.
Without affecting the settings in the laptop to work at the office,
how can I set the laptop to work at home and my office?

TIA.

ja