Regular Expressions provide powerful search capabilities for WebWatchBot. Creating regular expressions can be a challenge. We recommend a free tool that can assist in creating regular expressions.
Free Regular Expression Designer by Rad Software: http://www.radsoftware.com.au/regexdesigner/. From their website: "Rad Software Regular Expression Designer is a free download that helps programmers learn, develop and test Regular Expressions. It is an interactive Windows application that is designed to be simple and easy to use."