Wired networking

[H.S.Rai]

I upgraded Ubuntu from 8.04 LTS to 8.10 on my laptop using campus
through wifi for my laptop Compaq Presario V3000, having Intel Pro /
100 VE LAN card. With 8.04, both LAN and wireless was working fine.
But after upgradation, Network Managet Applet showed dimmed "Wired
network". On right click and edit connection, editing failed with
message: nm-ifupdown-connection.c.82 - connection update not supported
(read only)

What I can do to make LAN working.

-- 
H.S.Rai