PPPoA on Slax
 

my isp works with pppoa so my modem is configured that way. when ı boot up slax from live cd it cannot connect to my modem. in terminal even when I write "host localhost" it gives a timeout error and says server not found. what does this mean? I cannot connect to internet? pls help me?

PPPoA is only used between your modem and the PPPoA server at your isp.
So you have to check that your modem configuration is ok. it is not a modem/router? does it have an ethernet or usb interface to your pc?
Its more an ethernet or usb problem.

host localhost: you are trying to access your dns to ask who is localhost. As you don't have net access, it can't work (server unavailable). Even if you had internet, it would not answer, you have to type:

it will look in your /etc/hosts file.

modem config is correct because other distros don't have a problem connecting. my modem is a router+modem I guess. it is connected to my pc through ethernet interface. I should be able to connect to its settings through 130.147.154.140 and my pcs ip should be 130.147.154.1 in order to connect

So if you have a problem, then it is an ethernet problem, which is a lot easier to track.
As you said, do you reach your router by the web interface?

no I cannot connect I was thinking maybe my ethernet card is not identified but it sure is. it is a CNET Pro 200 ethernet card and the linux driver is a davicom... and it is detected.

What gives you these commands:

Ping yourself:
Ping your modem/routeur:
Ping google:
Ping google by name: