Thanks Harry,
I think the problem is the way knoppix handle the modem.
I have a program to check the modem and when starts its tells me that it found 2 IP and I must choose the one the router is.

192.168.1.2
201.223.104.227

The first one supposed be the router.
I select that and after a while the program tells me there is no router.

The other IP is the ISP, there is where I have to have the name and the password.

But for reasons that I dont know it does not go thru.

I think that's my problem,

Thanks anyway

PS I tried to ping that IP and nothing happen