How to Implement a Workflow System

[eluser]WanWizard[/eluser]
Wait until we're finished, and start using our framework, it has a complete workflow engine on board.

Alternatively, if you want to write one yourself (which from experience I can say will take a while), I suggest you read http://www.tonymarston.net/php-mysql/workflow.html, which is what we used as guideline of our workflow engine.