Is there a script that i can install into a blogspot blog in order that i can block a specific url from accessing my site. Sorry about my technical ignorance. Many Thanks in advance
Your technical ignorance lead to no answers ; ) Do really you want to block a URL ? A URL is a WWW address ! You maybe want to block people coming from another website you dislike: in this case you want to block by referer. This can be done through a PHP script (secure) or javascript (can be circumvented) and also through .htaccess. Do you want to block a specific HOST or IP Address ? Same solutions possible. But you need to give more details.
here's a tutorial on how to do it with htaccess: http://www.yakkel.com/tutorials/1067/how-to-block-an-ip-address