Install LinkSys SR41 router, follow procedure to configure PC, router. On PC panel Internet Connections, note DSL will deactivate; LAN activate. [When router plugged in, router takes over PC.] Caution: in configuring router, as reads "Username" this means: "username@provider.net" [complete e-mail address]. Failure to include complete e-mail address negates connection. I'm using PPoE per ISP. As indicated in LinkSys, other connections could apply. I just unplugged from modem to computer and re-plugged into WAN port, then plugged another cable into same computer port vacated with other end into one of four ports on router. Router will automatically configure as gateway between computer and Internet, provided the foregoing detail is faithfully observed. There's plenty of how-to's for either dial-up or dsl/cable singles; but nowhere has there been a simple explanation of how to connect a dual-boot, one-box system as above. Hopes this helps another floundering newbie.