You need to download the loaders from IONCUBE's website that fit your server's OS to anywhere within your server.
Create a zend_extension within your php.ini file as it shows above that I posted to the proper loader for your PHP version.
Basically that's about it! How you do it and how it's all done should be on your sysadmin, they don't have this installed on there?
Typical x86 *nix setup with Zend under /usr/local/:
That's how I do it within SSH, hope this helps! So it's actually pretty easy if you know anything of SSH