LAN hookup and home cable connection

I am trying to have my network connection at work and my mediaone cable
connection at home both on my Windows 2000 at the same time. How would
I do this? I had my cable connection from home on there first, and when I
configured my laptop to connect with the server at work, I went home and I
couldn’t get on the internet through my mediaone cable connection.

Any help would be greatly appreciated.

Thank you.