Notebook

I have a P3 700 with 256megs of ram. I have a W2k Network at the office and I have a
W2k Network at home. I would like to access both networks with my notebook. The problem is the Domain membership of the notebook. I can’t seem to make it switch between domain names. Anyone know how I can change the network (member of) Domain name in my notebook when I switch between networks.
And I don’t mean manually.

Thanks

Henry Sakowski