dual boot: linux can't detect and use my onboard lan, but windows can

my windows works good on the internet, the only tweak that i made is that i change the ip of my lab, coz it was set different so it cant get any ip or connext to the internet, but in linux i think my lan cant be detected. help please.

chico@chico-desktop:~$ idconfig
bash: idconfig: command not found
chico@chico-desktop:~$ ifconfig
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:850 errors:0 dropped:0 overruns:0 frame:0
          TX packets:850 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:42500 (41.5 KB) TX bytes:42500 (41.5 KB)

chico@chico-desktop:~$ getmac
bash: getmac: command not found
chico@chico-desktop:~$ mac
bash: mac: command not found
chico@chico-desktop:~$ clear

chico@chico-desktop:~$ lspci
00:00.0 Host bridge: VIA Technologies, Inc. PT894 Host Bridge
00:00.1 Host bridge: VIA Technologies, Inc. PT894 Host Bridge
00:00.2 Host bridge: VIA Technologies, Inc. PT894 Host Bridge
00:00.3 Host bridge: VIA Technologies, Inc. PT890 Host Bridge
00:00.4 Host bridge: VIA Technologies, Inc. PT894 Host Bridge
00:00.5 PIC: VIA Technologies, Inc. PT894 I/O APIC Interrupt Controller
00:00.7 Host bridge: VIA Technologies, Inc. PT894 Host Bridge
00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge
00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID Controller (rev 80)
00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South]
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
00:11.6 Communication controller: VIA Technologies, Inc. AC'97 Modem Controller (rev 80)
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78)
01:00.0 VGA compatible controller: ATI Technologies Inc RV535 [Radeon X1650 Series] (rev 9e)
01:00.1 Display controller: ATI Technologies Inc RV535 [Radeon X1650 Series] (rev 9e)
chico@chico-desktop:~$ ifconfig
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:850 errors:0 dropped:0 overruns:0 frame:0
          TX packets:850 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:42500 (41.5 KB) TX bytes:42500 (41.5 KB)

chico@chico-desktop:~$ sudo lshw -C Network
[sudo] password for chico:
  *-network UNCLAIMED
       description: Ethernet controller
       product: VT6102 [Rhine-II]
       vendor: VIA Technologies, Inc.
       physical id: 12
       bus info: pci@0000:00:12.0
       version: 78
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: latency=64 maxlatency=8 mingnt=3
chico@chico-desktop:~$