From machine go to command prompt and do an ipconfig /all
Look for your Ethernet Local Area connection, you should have these details.
Connection-specific DNS Suffix . : vodafone.com
Description . . . . . . . . . . . : Intel(R) PRO/1000 PL Network Connection
Physical Address. . . . . . . . . : 00-1A-46-68-40-98
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.10(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Monday, 2 November 2009 11:29:02 PM
Lease Expires . . . . . . . . . . : Tuesday, 3 November 2009 11:29:02 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 211.29.152.116
198.142.0.51
211.29.132.12
NetBIOS over Tcpip. . . . . . . . : Enable
Well it could differ in names and that but essentially you should have the lot filled in.