Connectivity problems with Comcast

Hello Everyone,

We got a new comcast connection last friday and so far I have not been able to configure my router/firewall. Here is a brief overview, My firewall inside interface is 10.x.x.x and outside is a static ip address given to us by verizon( they are our current provider which I will change to comast soon). Firewall is the default gateway and the outside interface is overloaded to give PAT for internet access.

Firewall has a routing rule that forwards all the traffic to (x.x.x.202) interface 1 on the router and router inturn simply forwards all the traffic to the second interface going towards verizon.. this current config without any issues.

Router has a rule ip router 0.0.0.0 0.0.0. interface connected to verizon.

Now I gave the third interface of the router a static ip provided to me by comcast. Disabled dhcp on the smc gateway and also all the rules on the smc have been disabed. I connect the 3rd interface to the SMC gateway. I removed the previous rule inside the router and created a new rule to forward all the packets to interface connect to Comcast.

Ip route 0.0.0.0 0.0.0.0 gig 0/2

now with this connection I have to no internet access inside my company. Any ideas on how to fix?  I Hope I was able to explain this properly.