Ability to access the system, not to access the Internet

Can enter the system, cannot access the Internet-Linux general technology-Linux technology and application information, the following is read details. Today, I re-installed the Hongqi linux5.0 password and finally got in.
The interface is similar to winxp, but it is difficult to operate. Something you probably don't understand
My computer does not have a sound card drive, but it does not have a sound when I enter it. In win, it is a drive from the Internet. But I don't know how to operate it in linux.
I used China Netcom's adsl to access the Internet. After I entered the linux system, I did not know how to install the adsl driver. No hardware display. Driver Installation is required. I don't know how to access the Internet.
I have two hard disks with windows xp respectively. Another hard disk cannot be found when Hongqi linux5.0. enters the win system.
I use mount/mnt/cdrom. Has loaded cdrom. But it does not work.
Please advise
Thank you.
: 0w223dc