Make sure they are on the same network, if you are using TCP/IP you will need to configure them to be something like 10.0.0.1 and 10.0.0.2 and subnet mask of 255.0.0.0 you will not need a default gateway on a peer to peer network. DHCP will not work unless you have a DHCP server. The notebook probably has DHCP enabled, to use at work.Are you sure it is a crossover cable?