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Phen is partially right.. it involves [php_man]file_get_contents[/php_man](), but if there are any external streams needed from that server, they likely will be blocked too. So, it's a combination of [php_man]file_get_contents[/php_man]() (or my preferred for this, [php_man]curl[/php_man]) and some regular expression function calls ([php_man]preg_replace[/php_man]) to switch all the external file references in the page to usable ones. You're basically building a proxy, in a fashion.