Hooking and changing Title and msgarea

[extends]

I've been trying to create a custom posting template for one of my forums on the board that I am creating(using this tutorial this tutorial )

But the problem is that I run into a issue of minimum character requirements and lack there of a title. Because I am creating my own custom forum fields, I'd like to create a custom predesignated title using one of the fields I have created and use my field data as part of the messagearea results.

How should I go about fixing this problem?