1) Boot from CD
2) Confirm that the network works.
3) Reflect on why we advise people to not install Knoppix to HD.

James has been able to talk a number of people through getting 3.9 to work after a hard disk install, a very little looking through these forums should find the information. But I've seen "The network no longer works after installomg to HD" posts for over two years, since 3.1, when I started using Knoppix. Consider this fix, which will also correct a lot of other Knoppix install problems.