If you're trying to make the empeg get an IP address from the Cable modem, it's probably not going to work like that unless you get the provider's permission. I go through AT&T, and my cable modem had to be set up with each of the MAC addresses on my LAN. The modem now acts as a NAT, and just sits on my hub. I think AT&T charges $10/month for the service, and it allows up to 3 MAC addresses to go through the cable modem. You'd only need this, of course, if you wanted the empeg to have internet access for the display server or the like.
Jason

_~= Dearing =~_
"WAY too happy about having #99."