Design document preparation

I have a half-done design document for a website for generating database content dynamically. It has a simple class design (Java classes) and is only missing some parts of it which are to be completed. Specifically I want : -Architecture design & description -Servlets/methods (class diagram) -Class interaction -Use case -Simple UML model Most of the stuff is already there and just needs to be written and completed with a professional-looking diagram/UML model. I need this done ASAP.