Install Failing …

I have WordPress directory structure in a directory named “wordpress” located under my root (www/wordpress). When I execute the “wordpress/wp-admin/install.php” script I get “It doesn’t look like you’ve installed WP yet. Try running install.php.” error. The link for install.php now reads “wordpress/wp-admin/wp-admin/install.php” when I click it.
Any suggestions?
Thanks
Gary