Perhaps I can help: I'm a Linux system administrator and a PHP programmer.

Well certainly they're free to read the code at http://nxtra.org/api - it should be pretty self-explanatory. Setting up nxt isn't much harder than setting up a BTC clone. The problem is making sure it runs consistently and is not stuck or something like that.  While vircurex and bit777 are not programmed in PHP, the concepts are the same.