I got a script made to manage my reseller aqccounts through WHM.
These are the requirements:

1) PHP 5.0+ , built with 1) Sockets 2) OpenSSL, 3) CURL+SSL, 4) mhash, 5) mcrypt;
2) MySQL server 4.0+
3) Zend Optimizer
4) Following outgoing TCP Ports need to be open, so system can communicate with WHM: 2087,2086,2082,2083


Regards
Mike