I see this is your first post, so welcome to the board.
You need to supply some information. Can you explain a little more by what you mean by
acer netbook, shows I have internet
We need to know the type of connection you have, wired, wireless? Do you have a router? Can other systems connect?
Open a command prompt, and run some commands and paste the results in this thread.
The commands: 'ifconfig' 'iwconfig' 'cat /etc/resolv.conf' 'lspci'
Run each command, one at a time. Do not enter the single quotes. Copy and paste each commands output. If your system responds with 'Command not found' you may have to enter the command as root user.
Post back, we'll go from there.