PPPoA configuration for DSL working problem on cisco router

[faisallt007]

Hi all, I have problem with PPPoA configuration. I can ping from the router to any where but not from the pc. fom the pc not even ping the public address of the router. Please any body help me as it getting nightmare for last two days. I am using Cisco 2811 with HWIC ADSL Card. Thanks

version 12.4
service timestamps debug datetime msec
service timestamps datetime msec
!
hostname Land_Factor
!
ip subnet-zero
!
ip dhcp excluded-address 192.168.2.1


!
ip dhcp pool Landfactor

network 192.168.2.0 255.255.255.254
default-router 192.168.2.1

ip name-server 167.x.x.x
ip name-server 195.x.x.x
!
interface FastEthernet0/0
ip address 192.168.2.1 255.255.255.0
no ip directed-broadcast
no ip mroute-cache
!
interface ATM0/0
no ip address
no ip directed-broadcast
no ip mroute-cache
no atm ilmi-keepalive
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
hold-queue 224 in
!
interface Dialer0
ip address 195.x.x.x 255.255.255.x
ip nat outside
no ip directed-broadcast
encapsulation ppp
dialer pool 1
dialer-group 2
ppp pap sent-username xxxxxxxxxxx password xxxxxxxxx

!
ip nat inside source list 1 interface Dialer0 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
no ip http server
!
access-list 1 permit 192.168.2.0 0.0.0.255
dialer-list 2 protocol ip permit
!

end