I installed Slackware 9 and ran netconfig it asked me for hostname, domain. I don't have a domain name so I tried continuing without typing anything. Setup would not allow that. So I typed in a random domain now I dont have internet. Going to reinstall slack now hope that will work. Please help me out. I have an SiS 900 PCI Fast ethernet adapter. Is their a specific kernel I should be installing. Please help me. Thanks.

Did it detect your card? Giving a domain shouldn't keep you from getting internet access. These are the steps it should ask:

1. Hostname: Basically what you want the name of your computer to be.

2. Domain: If you dont know, just put your ISP's name there, like for example if you use earthlink, use earthlink.net

3. DHCP or Static: If you select DHCP, it should automatically assign all your addresses like IP, Netmask, and so on but usually it won't get your DNS entries so you need to add your ISP's DNS servers in your /etc/resolv.conf file in this format:

nameserver 000.000.000.000
nameserver 000.000.000.000

Where the 000.000.000.000 is the actual IP address of the DNS server and spell out nameserver. Some will actually put:

search isp-servername.net

At the top, to search your ISP's domain, that would be for example like earthlink.net, etc.

4. If your using Static, you will have to specify all your addresses like IP assigned to you, Netmask, Gateway.. etc.

5. If you have it so Slack tries to probe for you card, if its successful, it should setup your /etc/rc.d/rc.netdevice file to automatically insmod your correct driver for you module to be used for the NIC. If it didn't find your card, you might have to recompile your kernel or download drivers to support the card. As far as I know, your card should be supported, from what I recall, should use the sis900 module.

Let me know if any of this helps you out getting online.

Well before reading your post I called my ISP and they said they didn't support Linux. But the sales rep who answered the phone was a Linux guru himself. He told me that for Linux I have to use the domain name that my ISP gives people who have routers to use. So he gave that to me. Thanks for the quick response though.

never call your ISP. ISP are always damn stupid no brain people wanting your money... they will not support anything but the version before the last M$ new toys. Linux support your ISP don't worry, just put anything at domain name and add the ip adress of your ISP DNS to /etc/resolv.conf.
as example, I use :
nameserver 206.221.6.10
nameserver 206.221.6.11
in my resolv.conf files

this ask linux to query your ISP DNS server for domain name.