Install Completion

Hi,

I just finished uploading wordpress using Filezilla, but when I go to http://evolutionglass.com/wp-admin/install.php to complete the install I get this message:

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator to inform of the time the error occurred and of anything you might have done that may have caused the error.
More information about this error may be available in the server error log.

Any idea why that may be? I followed the instructions in this guide ( http://codex.wordpress.org/Installing_WordPress ).