Multi column and multi row posting

Hello, I need to post in different columns and rows different posts:

As wordpress by default only posts in a sequence (post 1,2,3,4… in a column) and the only way of altering order is by designating sticky posts it is not useful for me because I need to select where on the home of the blog the post must go.

What I need can be described like this:

1. I need say 4 columns: A, B, D, E.
2. I need say 6 rows: 1,2,3,4,5,6.
3. With this the home is a grid and I have 24 “cells” to post articles: A1, A2…B4, B5…E2, E6…etc.
4. When I create a post I need to be able to designate in which cell it goes because I need to distribute the location of the articles by type, category, importance, etc.

What I see is that newspapers have this as they post news in different areas of their pages, but blogs are normally lineal and sequential…is there a theme that solves this or a plugin?

Cheers, Donald.