Internal Server Error

I get the following message after I enter in my database information and hit next…

[i]Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@XXXYYY.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.17 (Unix) mod_ssl/2.2.17 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4 Server at wcpdiesel.com Port 80[/i]

How do I get past this so I can get Piwik installed finally?

Please check your error logs and you will find the error message.