Help with finding a theme

Hi all

i really need some help.

I need to find a theme, one that i can edit easily, i know some about css and i do know html, not that great on php

i need the theme mainly to have the header, then nav, and then directly under the nav 3 or so boxes that go across and are eaily editable for chagnes. client wants them to link to different pages on website, which i can do eaily enough.

i need to find one that i can easily edit to match clients theme colors, been trying desparately to find a theme that has the 3 boxes under nav bar with no such luck at all.

any help is great appreciated.
i found the heliosgrin theme which is similar to what i want and another theme and tried to combine them, which worked ok at first. then i made one simple change to the header and lost the boxes that i had under the nav have no idea of how blogs work in respect to which pages need what. like functions.php and index.php and stuff.

Help please