Ok, ok, I confess I'm stupid, the network card now can comunicate with 
my other machine, but I'm still having some problems.

1. I can't configure the DNS (I'm  using adsl line with a router...)
2. I can't configure the gateway (I mean, the router address)
3. The nfs can't be mounted if the server is a Linux
4. the rcp can't copy from a Linux machine


Can anybody help me?

Thank you for your attention.

Eduardo