I tried checking "/etc/network/interface" which has
----------------------------
auto lo
iface lo inet loopback

auto lo
iface eth0 inet static
address xx
netmask xx
network xx
broadcast xx
gateway xx
-----------------------------

and tried checking "lspci -v", also inserted in /etc/modules.conf -
alias ne2k-pci eth0

Prior to all above, I had configured my 2.6.8 kernel by "make config" which had made me to select respective network options, maybe I missed something for "eth0".

I am getting following errors as now when I do -
/etc/init.d/networking restart
----------
SIOCSIFADDR: No such device
SIOCSIFNETMASK: No such device
eth0: Error while getting interface flags
Failed to bring up eth0
----------------------------

I wish to have some clue.

The o/p for lspci -v are -
-----------------------------------------
0000:00:00:0 Host bridge: Intel Corporation : Unknown device 277(rev02)
0000:00:01:0 PCI bridge: Intel Corporation : Unknown device 2771(rev02)
0000:00:1c:0 PCI bridge: Intel Corporation : Unknown device 27d0(rev01)
0000:00:1c:0 PCI bridge: Intel Corporation : Unknown device 27d2(rev01)
0000:00:1d:0 USB Controller: Intel Corporation : Unknown device 27c8(rev01)
0000:00:1d:1 USB Controller: Intel Corporation : Unknown device 27c9(rev01)
0000:00:1d:2 USB Controller: Intel Corporation : Unknown device 27ca(rev01)
0000:00:1d:3 USB Controller: Intel Corporation : Unknown device 27cb(rev01)
0000:00:1c:7 USB Controller: Intel Corporation : Unknown device 27cc(rev01)
0000:00:1e:0 PCI bridge: Intel Corporation : 82801 PCI bus(rev01)
0000:00:1e:2 Multimedia audio controller: Intel Corporation :
Unknown device 27de(rev01)
0000:00:1f:0 ISA bridge: Intel Corporation : Unknown device 27b8(rev01)
0000:00:1f:1 IDE Interface: Intel Corporation : Unknown device 27df(rev01)
0000:00:1f:2 IDE Interface: Intel Corporation : Unknown device 27c0(rev01)
0000:00:1f:3 SMBus: Intel Corporation : Unknown device 27da(rev01)
0000:01:00:0 VGA Compatible controller: ATI Technologies : Unknown
device 5162
0000:01:00:1 Display controller: ATI Technologies : Unknown device
5672
0000:02:00:0 Ethernet controller: Broadcom Corporation NeXtrem : BCM
5751 Gigabit Ethernet PCI Express(rev 01)
0000:04:02:0 Co-processor: Xilinx Corporation : Unknown device 0300
-------------------------------------------------------------------

and output for lsmod is nothing as shown below -
----------------------------------------------
$lsmod
Module Size Used By


______________________________________________

Any clue plz.