When you open Thunderbird for the first time, it will start out by asking you if you want to Import data. If you have an address book or other information contained in another program, select to import this data. If not. Move on to creating your account.

You will be asked what you want to setup. Email is the deafult, so you can just click on the "Next" button.

Next, fill in your name and email address. Click Next.

You will then be asked for the server settings. The settings in this image will work. You can also select "IMAP" for the Protocol" at the top.

Enter your username for the Incoming and Outgoing mail servers. This should be the first part of your email address for both of these settings.

The Account name can be whatever you want it to be. Typically, this can be left as is, and just move past it by clicking on "Next."

Click "Finish." There are a few more steps to complete the process.

When the software attempts to download your email, you will be asked for the password. Most people don't want to be asked each time for their password, so they'll check the "Use password manager. . . " box.

Your email will be downloaded, but there are some changes required for getting your email to send properly. From the drop-down menu's at the top, select Tools | Account Settings.

This will open a window showing you your accounts. Click on the "Outgoing Server (SMTP) at the lower left. Then, click on the "Edit" botton at the right.

In this window, change the port setting from 25 to 587. Click OK, and OK again, and you should be all set.