His method is much quicker but idea is the same.

I can't get it to work.Could anyone please tell me how to configure it correctly?I've got cable internet.Thanx in advance

Have you installed the TCPIP package?
Do you get any errors?
What exactly happens when you ping google.com?
Did your ISP give you any information regarding IPs or gateways?

When I launch firefox,it says that the url is not found.I don't get any errors.Uhm,what is ISP?

Isp - internet service provider. As mdarby said ping google.com. If it doesn't respond, ping your gateway.

Looking in your browser is a very quick way to see if you are connected, but it's not the best way.

Try this as root:

And paste that into the entry. It will help see what is the status of your connections. And see if you can find any messages about DHCP connecting- it will give you the address of your ISP (internet service provider- fancy name for internet company).

Make sure that you have rc.inet1 and rc.inet2 scripts in /etc/rc.d with executable attribute (x) something like this when you do ls -l in /etc/rc.d

because these scripts have to be executed at startup

Don't ping google.com - it's a search engine not a test sandbox.
Don't ping microsoft.com - it doesn't reply to ICMP packets AFAIK
Just ping some random address.

Does it harm google for pinging it? If pinging harmed in some way, they would disable response to icmp packets. Pinging google is good because their server is always online not like some random address.

This is bad advice. You know that google.com is going to be online, "some random address" will get you some random results.

Here is google's ip - 72.14.207.99, if your dns for somehow is not working.

Everybody's posting except the OP ;) There, now I did it too.