Hi all. I just bought a refurb MacBook Pro from Apple. I'm very happy with it. In the process of talking to a experienced computer-techie friend, he asked me what kind of firewall and router I was using with it. I had no idea what he was talking about. I've had a cable modem that I just hooked directly into my old eMac via Ethernet. He couldn't believe I left it open like that. I told him I had the firewall "on" but he said I needed a "hardware firewall" or something. I've looked at guides and looked at CNET and similar places, but I'm still fuzzy on what it is I need. Could someone just tell me what I need to purchase to have this "broadband router" thing? And if it's a "wireless" router, does that mean I can move around the house with my laptop? Sorry for the ignorance. I looked at some threads here before posting, but I'm still overwhelmed. TIA.