I have a modem (Tilgin Vood 342) that came from the phone company which I use to connect my old desktop PC and my new MacBook Pro to the internet, through two separate ethernet cables. The modem has three ethernet ports and connects to the internet through an ethernet port in the wall. I want to buy an Airport Express in order to get wireless internet to my MacBook, but since my desktop PC can't receive wireless internet, I still need it to be plugged into the modem through a cable (I don't mind that). So my question is, can I use one of the modem ports for the Airport Express and another for the ethernet cable without there being a conflict? I'm asking because I went to an electronics store and I was told that there might be a conflict and that I should buy an Airport Extreme or another router with ports in order for it to work. I would really prefer the Express because it's and it's the most I can pay for. Thanks for your help!