Maybe an unrelated question but ...

Hi there everybody - Have this problem : wrote a huge PHP script for a website (create webpages, admin areas, advertising program etc etc) and now the guy is not paying me. He changed the FTP login password so I can't block my work or deny him from using it. Some of the files do have 777 permissions - like hit counter log files, and I have tried to write something that will upload via an online form on his site and go and sit on the log file. Calling the log file directly should then execute the script which I would like then to give me some sort of access to change directory names (which will corrupt the scripts) I'm now writing scripts that would first look for a file on my site that would authenticate the script license before the script will execute on the other site - so I can block bad payers with this system - but I need to sort this guy out. Any help and ideas would be appreciated. August