If you've been running Windows on this computer and have run any of the "security updates" for windows this year, see my posts in this forum titled Evidence WinXP "security updates" may break Linux and Knoppix using NatSemi DP83815 stopped working. There are also a pair of commands in these posts that should get you working again.

If the "security updates" are not your problem, we need more information about your configuration and hopefully more details about what is failing. Run ifconfig. Also, you might download mii-diag from http://<a href="http://www.scyld.com...index.html</a>,
compile and run it and tell us what it says about your network card.