To use SME, you need a separate computer just for NAT routing (internet connection sharing). You can accomplish the same thing with WinMe/WinXP's ICS feature, or with one of those little broadband routers from Linksys, D-Link, NetGear, etc. Whatever you have directly connected to the internet connection (SME, Linksys router, WinMe PC, etc.) will have to be turned on for the other computer(s) to be able to access the internet.