I'm about to get my second desktop for my house, the wife wants her own.... and I want to network it together with my first one and my laptop. I bought a dlink wireless router and plugged the ethernet from the modem to the router. I get internet fine on both the desktop and the laptop. Now comes my question: I want to actually share files and share printers and such... Is it possible to do that with all 3 computers? Or is it just possible to do that with the 2 wired ones? Ive heard that you need a computer to act as a firewall and do some sort of conection sharing of the internet. Do i need to go modem, comp1 in, comp 1 out, router and then on? Is it even possible to do what I dream of? If i got an NAS, how would I incorporate that?