What sections do the following items fall under for submissions:
Feats
Prestige Classes
Planescape, Dungeons & Dragons, their logos, Wizards of the Coast, and the Wizards of the Coast logo are ©2008, Wizards of the Coast, a subsidiary of Hasbro Inc. and used with permission.
We don't have a particular section that 'just' handles those. (Part of how we're trying to restructure things and get sections up and running is to take such things.) Generally submitters have an idea where in the site they want their stuff to appear. Since your's predates the site... it's hard to pin down.
But given that I have an idea what the subject matter is? Probably Planar Portals >> Factions and Sects.