You can read this thread for testing ioncube loaders:
http://www.68classifieds.com/forums/...ead.php?t=1474
Also, you can get the settings of your server setup by creating a PHP file with this in the body:
Additionally, server information can be obtained by the hosting company and/or the server admin.
As for the requirements, they can be found here:
http://www.68classifieds.com/features/requirements.php
I'm not totally sure everything is covered here, but I'll leave that up to the staff to address.