Hi Rob,
> Answer: It's PHP, so it's open source in that I have access to the
> code and can modify it however I like (or in my case get one of my
> talented and PHP-experienced friends or coworkers to do it for me)
Does the licence you purchase it under have to grant you this right? Or
are you saying you can physically do it because of the nature of PHP?
Cheers,
Ralph.