So, I upgraded my basic 1and1 package and can now connect php files to the server. Unfortunately this file, http://dingbatstore.com/InfoRequest.php, is not connecting.
However, this file http://dingbatstore.com/InfoRequest.php5, does connect. Go figure. It throws a preformatted 1and1 error:
Error 404: NOT FOUND!
This domain name has just been registered.
I've included files in attachment and link to the site where you can see the problem occur and ftp login details in a PM so you can access the site files directly to troubleshoot.