I'm planning on testing the Asterisk PBX and I am interested in the hardware requirements for my situation. I'm running Red Hat Linux 9 on a PII 400 MHz machine with 412 MB RAM. I have two analog lines that I want to use. If the test goes well, I would like to add at least one Cisco 79XX phone. My network is NATed and I'm using Comcast for my broadband connection. I should also mention that I am using Vonage as my "teleco" provider. I have read the hardware recommendations on the Asterisk website, but I have to admit I'm very much a newbie in this area.