Here's a web page that has a little tutorial on how to get nice formatting in your messages here.http://www.phpbb.com/community/faq.php?mode=bbcode
It will show you how to use ITALICS
as well as how to create a URL LINK
in your messages.
Most of it can be done just by selecting your text while in a message and picking one of the buttons at the top of the message edit window and the tags are automatically placed around your selected text.
Any questions or problems just ask!!!