How is LAN diagram/schematic where my cable modem is connected to?

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http://superuser.com – I'm not an IT guy, i'm just home user which know a bit about networking. I'm trying to learn how the connection (LAN) is built in outer side of my home LAN. Here's the diagram : PC (IP: | | (wirelessly) | cisco router WRT54G2 as gateway ( / | | (via copper straight cable) | cable modem | | (via coaxial cable) | Internet provider (ISP) | | | i n t e r n e t The last 2 nodes above (isp and internet) is the WAN. From my PC i connect to the router and see the configuration (router administration page), i can see that (HowTos)