I believe this nic uses the Winbond w89c840 driver. (Most other Compex boards are NE2000 clones).
see
http://www.scyld.com/network/
you should see something like w89c840 from the output from:
lspci | grep Ethernet
if not, type something like:
insmod w89c840
or
modprobe w89c840
aren't sure of the module name? the drivers are usually located at /usr/src/linux-2.2.18/drivers/net again where 2.2.18 is the kernel version you are running.
if you don't know your kernel, type
uname -r
if you get no error message, from insmod or modprobe, then it worked.
after that, configure with
netconfig
and then check you work with
cat /etc/sysconfig/networking-scripts/ifcfg-eth0