Welcome to the forums!
Originally Posted by tman81
What exactly am I doing wrong?
Biting off more than you can chew.
Take small steps, work through your problems one by one. CentOS is a complex operating system that will take you a while to learn.
Here are some good resources to get you started:
Sorry that I can't be of more specific help, however CentOS 4.3 is a very old release, and I only have personal experience with 5.x. Just a word of encouragement I guess.