OK. I just started using Linux Red Hat and got some instruction on it. I was told to use the Terminal and enter dhcpcd in it to activate my Internet on it, but it said something like "Invalid Command", I can't remember exactly what it said. What am I doing wrong? Could someone please help me? Also, please take note that I am VERY new to Linux. This is my first time using it. If you need more information, please tell me and I'll see what else I can post.

The command is dhcpd and it serves to activate a DHCP server: this is useful only if your machine must act as a DHCP server in a local network. In a scenario were the Red Hat machine is connected to the web and other machines are connected to the Red Hat server, it will provide a dynamic IP address to the other machines when requested.

If you describe better your scenario, we can try to be more helpful. For example, how the system is connected to the web (wireless network, wired network, DSL modem and so on)?

It's a DSL Modem, but whenever I try to activate the Internet, it says it cannot activate the "device".

Usually the setup of a DSL connection is a straightforward process. Which version of Red Hat have you installed? If in doubt, open a terminal and issue the following command:
If you have Red Hat Enterprise 5 (RHEL 5) take in mind that you can find plenty of documents available online. For example, have you checked the chapter "Establishing an xDSL Connection" in the Deployment Guide?

When I tried that command in the terminal, it said "Bash: Command not found".

Well, try this:

According to the Terminal, it is "Linux Red Hat Release 9 (Shrike)".

Uh oh... that's a quite old release of Red Hat. There is a chance that you don't have the proper driver to manage your ADSL modem. Did you have any valid reason to install such an old piece of software? Maybe it is an old computer with limited resources (e.g. low amount of RAM)? If not, I strongly suggest to install a newer release. If you want to stick with Red Hat, you can try CentOS, which is the free version of Red Hat Enterprise.

I didn't choose to install Red Hat. The guy who works on my computers did it. He gave me the 2 CDs to install it, but had already done it himself.

Even if you are new to the Linux world, the current installation procedure is very easy and friendly. You can choose the blue pill and ask to your friend to install a newer release or eventually to check the drivers for the modem. Or you can choose the red pill and download the DVD iso of CentOS, burn it to a DVD and start a new installation by yourself. With our help, of course!

That Blue Pill/Red Pill thing sounds awfully familiar. None the less, I need time to think about this. I appreciate all the help you are offering me.

OK. I just talked to my friend, and I think I will try CentOS. How do I get it, how do I burn it, and how do I install it?

To download it, just start here and select the latest release 5.2. i386 if you have a 32-bit machine, x86_64 if you have a 64-bit architecture. To burn it you must have a DVD writer, then depending on the system you're running on (windows?) open the proper burning application (nero?) and choose to write an ISO to the disk. To install, just be sure your machine can boot from the DVD-ROM (this is a BIOS setting usually already enabled by default), then power on your machine, insert the DVD and a page will show up to select "New Installation". Then you can follow step by step instruction from the installation program itself.

Here is a useful link to an installation guide. It is relative to the previous CentOS 5.1, but the basic steps are the same: http://www.howtoforge.com/installati...tos5.1-desktop. On the same site there is an installation Guide of CentOS 5.2 but it is focused on setting up a server. Maybe you can read it until it covers the initial steps of the installation: http://www.howtoforge.com/perfect-server-centos-5.2. Hope this helps.

There are a lot of files on each Mirror. Which one do I download?

From the complete list of mirrors you can choose one with the "Direct DVD Download": http://www.centos.org/modules/tinyco...ndex.php?id=30. Just an example from the University of Utah's mirror:
provided you have a 32-bit machine.