Which type of help you need?? If you are using webmaster tool for your site, there is a option creat robotos.txt. You can create a robots.txt file from there and can put there your pages to allow OR disallow then upload this file. Alana
Learn the syntax at http://www.robotstxt.org/ or at Wikipedia. If you have any specific tasks that you want to achieve, you can ask here.
You can learn about using robot.txt and how to use it on following url :- http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=40360 Good Luck
Or you can even validate your robots.txt before using it here: tool.motoricerca.info/robots-checker.phtml