Overview Section - Status Tab Here is the overview of your system.  It tells you how many times you've been alerted etc.  From here you can also view the tutorial or download updates as they become available.

Overview Section - Product Info Tab You'll find version information and you can change your registration information here.

Overview Section - Preferences Tab Set these preferences as you like.  They can also be left as default.

Firewall Section - Main Tab

Okay, depending on your system setup, your settings here may be different.  In the "Internet Zone Security", a few of you will be able to keep the setting here at "High" while most of you will need to back the setting down to "Medium" for your computer to work.  There is an easy way to tell.  Leave the "Internet Zone Security" set as "High".  Now, use a web browser to access the website that is running on the internet.  If you see this purple titled message:

If you see the message, click "Remember this answer the next time I use this program" and click "Yes".  You can leave the "Internet Zone Security" set as high.

If instead you see a red title message that says your machine was intruded upon and the attack was blocked, then you need to back down the "Internet Zone Security" setting down to "Medium".  When you do this, you'll get the same purple titled message as above.  You will need to keep your "Internet Zone Security" set as "Medium".  How come there is a difference between the two?  I don't know.  In either case, the goal is to let ZoneAlarm know that we do in fact want the server program to act as a server and to give it the proper permission when asked. In the "Trusted Zone Security", You can leave this set at "Medium".

Firewall Section - Zones Tab If your network of computer is behind a router, you can change the adapter subnet entry from "Internet" to "Trusted".  If you don't have a router and are directly connected to the Internet, then you should keep this zone as "Internet".

You can also designated specific IP address, sites, subnets, or networks as "Trusted" or "Internet sites".

Whenever you make changes, make sure to click on "Apply" for the changes to take effect.

Program Control Section - Main Tab You can keep the settings at default here.  Basically, with these settings, when a program tries to access the Internet or act as a server, it will prompt you for permission.  If you want to grant the program permission.  Click "Yes".  For most programs, when prompted with an alert, you should also check the box that remembers your answer so you won't have to be alerted each time the program wants to do something.

Program Control Section - Programs Tab Here is a list of programs that either try to access the Internet or act as a server.  A green check mark means that it has permission and doesn't need to ask you each time.  A blue question mark means that the program will ask for permission before it is allowed to do anything.  A red X means that it is not allowed to access or serve the Internet.