WordPress Plugin Development

I want to write a plug in.

I have read some of the documentation about how 'hooks" work but I do not know which hooks to take advantage of.

I want to write a plugin that launches a separate page when a new user wants to add a new comment.

In other words, I want the ability to insist that the user add more than just a username and email. I want to require that more information be inputted.

Maybe such a plug-in already exists or perhaps something simular. Does this sound familiar?

Here’s a link to the comment actions for Wordpress:
http://codex.wordpress.org/Plugin_API/Action_Reference#Comment.2C_Ping.2C_and_Trackback_Actions

That’s the first place to start.

This is a good suggestion.

I wonder if the APIs replace the WordPress functions or if they add to them.