Full detail of my cisco 2800 series configuration

[Austin2811]

The full details of the information I earlier sent is as :

I have a 2800 series cisco router that I have configured with:

WAN:

IP address: 78.138.26.140
Netmask : 255.255.255.248

Gateway: 78.138.26.140

DNS: 78.138.26.137
83.229.88.30


LAN:

IP address: 10.120.1.1
Netmask: 255.0.0.0

I connected :
the Fastethernet Fe0/0 with Private IP 10.120.1.1
the Fastethernet Fe0/1 with 78.138.26.140 From the ISP
and I want to browse the internet.
Pls find below my conf.
I dont know where I missed out
Pls help me out asap.
thanks

Touchdown#term len 0
Touchdown#show run
Building configuration...

Current configuration : 1934 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Touchdown
!
boot-start-marker
boot-end-marker
!
no logging buffered
enable secret 5 $1$PXLE$UBB1Y0CDNVpOTBAAZtr3i.
enable password cisco1
!
no aaa new-model
!
resource policy
!
ip subnet-zero
!
!
ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address 10.0.0.1 10.120.1.4
ip dhcp excluded-address 10.120.2.0 10.255.255.254
!
ip dhcp pool touchdown
network 10.0.0.0 255.0.0.0
dns-server 10.120.1.1
default-router 10.120.1.1
lease infinite
!
!
ip name-server 78.138.26.137
!
username Administrator privilege 15 secret 5 $1$5jH1$h1fUkzZgUlD7EVCEmpM821
!
!
!
interface FastEthernet0/0
description $ETH-LAN$
ip address 10.120.1.1 255.0.0.0
ip helper-address 10.120.1.1
ip nat inside
duplex half
speed auto
no mop enabled
!
interface FastEthernet0/1
description $ETH-WAN$
ip address 78.138.26.140 255.255.255.248
ip mask-reply
ip directed-broadcast
ip nbar protocol-discovery
ip flow ingress
ip flow egress
ip nat outside
duplex auto
speed auto
!
ip classless
ip route 0.0.0.0 0.0.0.0 FastEthernet0/1 permanent
ip route 10.0.0.0 255.0.0.0 10.120.1.1
!
ip http server
ip http authentication local
ip nat pool touchdown 78.138.26.137 78.138.26.140 netmask 255.255.255.248
ip nat inside source list 4 interface FastEthernet0/1 overload
!
access-list 1 remark CCP_ACL Category=2
access-list 1 permit 10.0.0.0 0.255.255.255
access-list 2 remark CCP_ACL Category=2
access-list 2 permit 10.0.0.0 0.255.255.255
access-list 3 remark CCP_ACL Category=2
access-list 3 permit 10.0.0.0 0.255.255.255
access-list 4 remark CCP_ACL Category=2
access-list 4 permit 10.0.0.0 0.255.255.255
snmp-server community public RO
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
privilege level 15
password cisco1
login local
transport input telnet
!
scheduler allocate 20000 1000
!
end