Hey Ralph.m,
I was going through that tutorial about the php and .htaccess files and after setting everything up I've run into a curious error on my main page,

"Internal Server Error

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

Please contact the server administrator, webmaster@localhost 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."

This has never happened before.. Any idea what could have caused it? Thank you.