Renaming the example to index is good but what you pasted there is PHP code, not an error. If it’s showing the code that isn’t really good. Does your host support PHP and MySQL?
To do the install you must go to /admin/install.php and enter your database info. If you don’t have that file then something may be getting uploaded wrong or not working correctly. It sounds like maybe it could be a problem with your web host even, especially if it is just showing you the PHP code and not executing it.
If you would like me to test things out feel free to send me an email using the contact form: http://www.milliondollarscript.com/contact/ryan-rhode
Don’t post your details on this website.
Take care =)