Missing Ethernet Port

[David Bowskill]

Hello All

I have a problem when installing Ubuntu 10.04 on a Friends Laptop.

I have already installed 10.04 with no trouble on my desk top and lap top.

In a terminal  "ifconfig eth0" shows 'eth0' to be present on both my
machines but absent on the Friends laptop (there is also no eth1 etc).

The Friends laptop connects to the Internet OK on Windows 7  but because
of the absence of 'eth0' fails to connect with Ubuntu.

Can anybody tell me how to fix this ?

Thanks in advance

David B