pci network configuration

[Gilbert.Li (李威儒) <Gilbert.Li@mic.com.tw>]

Hi! I have a potato box with dlink dfe 530 tx.
I recompile my kernel with via-rhine driver bulit-in.
And next?
 
$cat /proc/pci
I found
Bus 0, device 14, function 0:
    Ethernet controller: VIA Technologies Unknown device (rev 66). 
        Vendor id=1106. Device id=3065
        Medium devsel.  IRQ 11.  Master Capable.  Latency=64.  Min Gnt=3.Max
Lat=8.
$cat /etc/network/interfaces

auto eth0 lo
iface lo inet loopback
iface eth0 inet static
      address 10.XXX.XXX.XXX
      netmask 255.255.255.0

$ifup eth0 
/etc/network/interfaces: option without interface     # WHY???

 I don't know why.  Thanks