Don't use a GUI if you really want to make it work.
Hmm, my 8139C tells me 00:40:4f:something. The first 3 bytes should be
reserved per manufacturer/vendor, so make sure it's really a realtek.
And no IP address here. What about "ifup eth0" and "ifconfig eth0" and
"route"? I guess your router does DHCP, so your linux box should get its
address and gateway and probably even DNS entries just like the windows
Again I have to assume something .... that your router also does NAT, or
your NIC is registered with your cable modem provider to receive a
Longhorn error#4711: TCPA / NGSCB VIOLATION: Microsoft optical mouse
detected penguin patterns on mousepad. Partition scan in progress
to remove offending incompatible products. Reactivate your MS software
(3 days grace period). [2.4.22-18mdkcustom/Athlon]