Hi bluefade. I'm kinda new here too, but have you tried going to menu > System Tools > Configure Networking? There you'll find options for your setup, regardless if they are wired or wireless. Hope this helps!

Hi,
i've done that. The thing is that i'm able to see eth0, but i can't get it to work on dhcp.

What is the output of "udhcpc eth0"?

it says:
udhcpc: SIOCGIFINDEX: No such device

I am using the cooking version, if that matters

can you please post the output of ifconfig as well as "dmesg | grep Network"? thanks.

try

cat /proc/net/dev | grep eth

too and see if any eth* is there

ifconfig only shows "lo"

ifconfig -a
dummy0 Link encap:Ethernet HWaddr DA:DF:37:25:7F:74
BROADCAST NOARP MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

eth1 Link encap:Ethernet HWaddr F5:F5:F5:F5:F5:F5
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:16 Base address:0x8000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

read this
http://forum.slitaz.org/index.php/discussion/738/eth0-eth1-liveusb-and-udev-persistent-rules/#Item_10
you should udhcpc eth1 instead of eth0

This could be a problem:
eth1 Link encap:Ethernet HWaddr F5:F5:F5:F5:F5:F5
The network settings:

root@slitaz: nano /etc/network.conf

INTERFACE="eth1"
or
menu/system tools/Netbox Configure networking/DHCP tab/Interface: eth1