Are you SURE that that is the problem?
One of the biggest things that Windows users face moving to Linux is a tendancy towards bad guessing. It is actually a problem under Windows, but you don't get trained not to do it because Windows never pushes you to really understand what you are doing. Furthermore often they actively hide the reality, so even if you are right, it is hard to know.
If you booted but had no network access, then there are a number of things to check. Starting with whether the ethernet card that you have is supported.
Cheers,
Ben
"good ideas and bad code build communities, the other three combinations do not"
- [link|http://archives.real-time.com/pipermail/cocoon-devel/2000-October/003023.html|Stefano Mazzocchi]