I have a laptop I use both at work and at home.  At home I have a workgroup
with drives shared out.  At work we have a large network and my laptop is
part of a domain.  When I bring the laptop home it can use the home network
to get to the Internet just fine but it cannot see the workgroup or any of
the drives.  If I want to move a file from the laptop to one of my home
machines I have to use email, a CD, a USB key, etc.

Is there a way to have a PC participate on two networks (a workgroup and a
domain in my case)?  How would you switch between the two without having to
totally reconfigure each time?

This would seem to be a common scenario these days yet I'm not aware of a
straightforward way of doing this.

Thanks!