My company is running around 80 computers behind a single IP address. The router is a Sonicwall 1260, and so far, I have not found a way to see if only using 1 IP for all that dynamic NAT is causing ...

Here's the setup. I am using Windows 2000 server as a NAT router. It connects via cable modem to the internet, and via linksys switch to the rest of the network. I am using DNS2Go.com's dynamic DNS ...