I have installed a fedora Core 3 in which I tried to configure the network address but it threw the error:
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SIOCSIFADDR:no such device
eth0:unknown interface:No such device

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For your information the output of the following:
#lspci
HOst Bridge:Intel Corp :unknown device 2770 (rev 02)
VGA compatible controller:Intel corp:Unknown device
Class 0403:inmtel corp:unknown device
PCI bridge:Intel Corp:Unknown device
USB Controller:intel Corp:Unknown Device
USB Controller"'
PCI Bridge:Intel Corp:82801 PCI Bridge(rev e1)
ISA BRidge:Intel Corp:Unknown Device 27b8(rev 01)
IDE Interface:intel Corp:Unknown Device 27c0
3f:00:0 Ethernet controller:Broadcomm Corporation:Unknown Device:1600(rev 01)*******************************************************

#lspci -n

00:00:0 Class 0600: 8086:2770 (rev 02)
00:0b Class 0300: 8086:2772 (rev 02)
00:0c:0 Class 0403: 8086:27d8 (rev 01)
00:0c:1 Class 0604: 8086:27d0 (rev 01)
00:1d:0 Class 0604: 8086:27d2 (rev 01)
00:1d:1 Class 0c03: 8086:27c8 (rev 01)
00:1d.2 Class 0c03: 1073:27c9 (rev 01)
00:1d:3 Class 0c03: 10b9:27ca (rev 01)
00:1d.7 Class 0c03: 10b9:27cb (rev 01)
00:1e:0 Class 0c03: 10b9:27cc (rev 01)
00:1f:0 Class 0604: 1904:244e (rev e1)
01:00.0 Class 0601: 1039:27b8 (rev 01)
00:1f:2 Class 0101
3f:00:0 Class 0200: 14e4:1600(rev 01)
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mii-tool
No mii interface

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[The above command output has been written by me as I couldnt copy from the machine directlty due to no networking and putty was not working..One thing to let you know is that Firstly I had installed Ubuntu and it was workign without any issue but eth card in fedora core 3 not working

Any HElp????

I'm sure you have a good reason for using FC3, but still, I would like to know why? You do realize that Fedora 8 (F8) has been released. FC3 is way past its End-of-Life/Support.

Anyhow, with respect your problem, it looks like your system did indeed detect your Broadcom NIC, however it would appear (from the error you are getting) that the eth0 interface is not being set up. This is probably because you are missing, or have not loaded, the appropriate driver for your NIC.

You need to find out exactly what type of Broadcom card (or chip-set) you have. Maybe if you run "dmesg" you find this out. Then determine if your kernel provides the driver. You may also have success finding a driver at Broadcom's website, but whether this driver would be compatible with the aging FC3 kernel is another issue.

Dear jet,
it seems that your question has been answered but if problems persist upgrade to a later issue.Do you regard the present one as a challenge? Might as well change to the shell and have done with it! Could be a modem problem but then oncce your IP address is established the that is it, ie, will work on anything, providing it has version 4 access.

Roy