Welcome to LQ elilamar!
It will help us to know the network card on your machine. Please post the output of (you may need to be root)
lspci -nn | grep Ethernet
Keep in mind that gNewSense is a completely free (as in speech&beer) GNU/Linux distribution. Many drivers, especially wireless, require non-free drivers and you will likely have to install these yourself. This makes the jump into Linux a little more difficult, though for some people this is what it is important to them.
Hopefully we can help more when we know a little more about your system.