Access to Time Warner cable network

[Fbsd8]

Just purchased an account on the northern Ohio Time Warner cable system.
Having problem connecting to their service. Seems their dhcp server has 
an ip address of 10.2.0.1 which is not public routable. I know my 
Freebsd 8.2 box functions because it worked fine under att service which 
I just left for Time Warner service. MY xp laptop works fine with time 
warner. I can see that during the connection hand shake they first issue 
ip addresses 192.168.x.x then end up with real public routable ip 
address for dns and my ip address. Just the dhcp ip is 10.2.0.1. XP 
seems to handle this connection hand shake ok.

Does any one have any suggestions on how to get Freebsd 8.2 working 
under TW?