Outlook Express was installed when I bought the computer.
So how, and should, I get rid of it?
What subsitute?
Will addresses book and all the saved stuff disappear?

I've been using Netscape's mail. It's very simple, full-featured, and has yet to really screw me up. In my experience, it's better to leave both Outlook and Outlook Express installed, just ignore them....

You can probably export your Outlook addresses in a generic format (look under the File menu). Then import them into Netscape (File menu again). When you install Netscape, it might pick up your favorites from Outlook automatically.....