>>whats in /etc/sysconfig/networking/devices/ifcfg-eth0
>
>
> Contents of /etc/sysconfig/networking/devices/ifcfg-eth0 :
> ---------------------------------------------------------------
> DEVICE=eth0
> ONBOOT=yes
> BOOTPROTO=none
> USERCTL=no
> PEERDNS=no
> TYPE=Ethernet
> IPADDR=172.16.37.20
> NETMASK=255.255.255.0
> GATEWAY=172.16.37.254
> NETWORK=172.16.37.0
> BROADCAST==172.16.37.255
> ---------------------------------------------------------------
>
>

that should be

BOOTPROTO=dhcp
perhaps you did not tell your card to grab an address using dhcp as it
appears here. or is this the ifcfg you used for manual configuration.

if you configged it right and this is just the wrong ifcfg, then try
giviing your card a hostname such as

DHCP_HOSTNAME=myhostname

then you can perhaps see in your router log if this computer actually
grabs a dhcp address or not.


what does 'ifconfig' say again? you are certain the drivers are
installed and loaded right?

CL