actually with just a switch your computers WILL get their own ip’s because of it. I had a setup with just computers and a switch done at home and at bestbuy when i worked there to network games. It’s bare basic in all honesty…spend the extra money on a router
Pretty much all you do is wire the uplink to your net connection whether it be cable, dsl, or something else that uses ethernet…and hook your computer(s) up to it so that the connection can be shared. Great for those who have a ps2 and a computer or two and have to unplug one or the other to use the net cable