I have created a guild alliance site. It has grown to 856 members in two days. Now here is my issue. I need to be able to do the following:

I need to be able to add a page where Banners can be aded from each guild linking back to there website (ideally I would like them all to shift there sites to DKPS but one step at a time here). I want to then spotlight the guild with a brief description and recruiting information as our new policy is to offer characters in the game a choice of guilds within the alliance.

So how would I add a page which will give me the ability to edit and add everything I might need to do this?

You'll do this from Menu Administration. Head to Admin > Menus > Menu Administration. Click "Add New Item To this Menu" (located under any menu). At the bottom is a box where you can enter BBCode or custom HTML. That will become a page.