IP help please
 

When i go to status on my internet connection it says:
Device name: Lucent Win Modem
Device type: Modem
Server type: PPP
Transports TCP/IP
Authentications: PAP
Compression: (none)
PPP mulitlink framing: off
Server IP Address: xxx.xxx.xxx.xxx
Client IP address: xxx.xxx.xxx.xxx

which is the EXternal and INternal IP address im confused about the whole IP thing.