For Windows xp:
Press the Windows Key
click the Run command
Type CMD in the black box
Type tracert www.msn.com in the big black box
The information that appears includes the ip addresses of every server between your computer and the msn computer. The www.zzz.com can be any computer that you want. The ip address will change as the route through the internet changes.
Does that answer your question? If not, it is fun anyway!