I am installing a script (that I bought on cpanel) in the root directory of my web site. When I try to install it, it gives me an error. I found that it starts an infinite URL redirect loop containing the name of my web site. Something like: install//mywebsite.com/install=mywebsite.com/install=mywebsite.com/install=mywebsite.com etc. until the browser refuses to continue when URL gets too long. The vendor told me I need to have mod_rewrite installed on my cpanel and something about .htaccess. How do I do fix this?