problem with network card in P35+ICH9

[Playnet]

  I have a server based gigabyte MB with core2 quadro, P35+ICH9

  FreeBSD 6.2

   server# ifconfig -a 
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 
options=1b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING> 
inet 192.168.2.54 netmask 0xffffff00 broadcast 192.168.2.255 
ether 00:1a:4d:53:54:4d 
media: Ethernet autoselect (none) 
status: no carrier  

  server# dmesg |grep re0 
re0: <RealTek 8168B/8111B PCIe Gigabit Ethernet> port 0xc000-0xc0ff
mem 0xf9000000-0xf9000fff irq 16 at device 0.0 on pci4 
miibus0: <MII bus> on re0 
re0: Ethernet address: 00:1a:4d:53:54:4d 
re0: [FAST]  

  But these lan works good into windows with the same cable and
connection.