Cisco Router DNS Issues

Hello

I am new to this but I am trying to set up T1 on a Cisco router 1841. I configured the s0/0 with the IP address provided by TW telecom
they also gave me a block address of 173.226.197.156/30

I configured fa0/0 interface of the router with 173.226.197.157

I also configured dns and nat

below is a copy of the config but I'm still not getting any connection, this is what I get when I ping google.com

% Unrecognized host or address, or protocol not running.





Last configuration change at 21:02:29 UTC Thu Feb 6 2014
! NVRAM config last updated at 21:02:50 UTC Thu Feb 6 2014
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
!
resource policy
!
ip cef
!
!
!
!
ip name-server 216.136.95.2
ip name-server 64.132.94.250
!
!
!

!
interface FastEthernet0/0
ip address 173.226.197.157 255.255.255.252
ip nat inside
ip virtual-reassembly
speed 100
full-duplex
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0/0
ip address 74.202.214.154 255.255.255.252
ip nat outside
ip virtual-reassembly
encapsulation ppp
fair-queue
service-module t1 clock source internal
service-module t1 timeslots 1-24
!
!
!
ip http server
no ip http secure-server
ip dns server
!
!
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
login
!
scheduler allocate 20000 1000
end

Router#