internet not working..........

hey i m a new user and internet is not working in ubuntu
i had installed 8.04 version earlier bt d same problem occurs and i don't know hw to get rid of it i uninstall ubuntu that time
bt now i hav install 9.04 becoz i m getting fedup from window so i switch to ubuntu...........

i m having 2 lan port .........
one is onboard which is "82801G (ICH7 Family) LAN Controller "
sencond is connected to pci slot which is "RTL-8139/8139C/8139C+ "

internet is not working at all in ubuntu bt is working fine in window's ...........
pls help me out what to do with this thing.......................

i have type following commands in terminal

ashish@ashish-desktop:~$ ping 192.168.1.1

PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.821 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.733 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.722 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.676 ms
^C
--- 192.168.1.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3000ms
rtt min/avg/max/mdev = 0.676/0.738/0.821/0.052 ms

ashish@ashish-desktop:~$ mii-tool

SIOCGMIIPHY on 'eth0' failed: Operation not permitted
SIOCGMIIPHY on 'eth1' failed: Operation not permitted
SIOCGMIIPHY on 'eth2' failed: Operation not permitted
SIOCGMIIPHY on 'eth3' failed: Operation not permitted
SIOCGMIIPHY on 'eth4' failed: Operation not permitted
SIOCGMIIPHY on 'eth5' failed: Operation not permitted
SIOCGMIIPHY on 'eth6' failed: Operation not permitted
SIOCGMIIPHY on 'eth7' failed: Operation not permitted
no MII interfaces found

ashish@ashish-desktop:~$ ifconfig -a

eth0 Link encap:Ethernet HWaddr 00:e0:4d:84:be:e8
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
          Interrupt:18 Base address:0x1000

eth1 Link encap:Ethernet HWaddr 00:19:d1:13:4c:1f
          inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::219:d1ff:fe13:4c1f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:39 errors:0 dropped:0 overruns:0 frame:0
          TX packets:64 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3632 (3.6 KB) TX bytes:7548 (7.5 KB)

lo Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING MTU:16436 Metric:1
          RX packets:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1072 (1.0 KB) TX bytes:1072 (1.0 KB)

pan0 Link encap:Ethernet HWaddr 16:4d:07:bf:1a:a2
          BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

ashish@ashish-desktop:~$ sudo lshw -c network
[sudo] password for ashish:

  *-network:0
       description: Ethernet interface
       product: RTL-8139/8139C/8139C+
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 2
       bus info: pci@0000:05:02.0
       logical name: eth0
       version: 10
       serial: 00:e0:4d:84:be:e8
       size: 10MB/s
       capacity: 100MB/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=half latency=32 link=no maxlatency=64 mingnt=32 module=8139too multicast=yes port=MII speed=10MB/s
  *-network:1
       description: Ethernet interface
       product: 82801G (ICH7 Family) LAN Controller
       vendor: Intel Corporation
       physical id: 8
       bus info: pci@0000:05:08.0
       logical name: eth1
       version: 01
       serial: 00:19:d1:13:4c:1f
       size: 100MB/s
       capacity: 100MB/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e100 driverversion=3.5.23-k6-NAPI duplex=full firmware=N/A ip=192.168.1.2 latency=32 link=yes maxlatency=56 mingnt=8 module=e100 multicast=yes port=MII speed=100MB/s
  *-network DISABLED
       description: Ethernet interface
       physical id: 1
       logical name: pan0
       serial: 16:4d:07:bf:1a:a2
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes

please help me .........................
pls help me...............
pls
pls
pls
pls
pls