If you are looking for a page counter and website statistics tool (for FREE) Google Analytics (formerly known as Urchin) is a very good tool for monitoring your website. To use it, you just setup a Google Analytics account at http://www.google.com/analytics/ and then insert a little bit of javascript (they provide you with) into your website.
Analytics provides much more useful information than just seeing how many user have flipped a counter on your site.