Asterix VOIP server help - centos 5.5 - registering xlite

Hi, I just need some basic help and training running my voip server and understanding how to register my softphones. Currently I have my voip server hooked up to a home network that has 5 win pc's on it and then my voip server so I don't know if I can register the xlite soft-phones effectively while on a shared ip network. If I cant I have another isp coming into my home that I am only using for 1 web-server and I thought if I got a gigabit wired router in-between the modem and the voip server and the web-server and share the 5 mbps line I would be ok, is that true? So what I would like to do is give u the TV info to get on my voip server and check out my setup so u will know the best way to help me I would like to do a screen share and record the training u give me on the screen share to reference at a latter time if I need to show my partners or whatever. Thank u for reading, Barry