You can use .htaccess file to redirect URLs to different URLs. Here is your trick.
First you need to on the rewrite engine. To do so, open your .htaccess using notepad. Then add this line
RewriteEngine On
After that you can add the redirect rules to your .htaccess.
Here is the syntax:
redirect accessed-file URL-to-go-to
Example:
RewriteEngine On
/site/index.html http://mysite/index.html
