This addon will get all the people who have no clue how to operate Grid to have my Grid and it's features/looks. I use this for Arena PvP, and raiding. I have manually added every spell in the game to grid and set each spells priority to a certain value so that the most important ones show in the middle of grid allowing you to catch it at the corner of your eye while focusing on other things making for quick and easy dispels.
Simply download and unzip to your Desktop. Put all the contents that are inside the folder called "Addons" into World Of Warcraft > Interface > Addons > ('Here"). Then add the contents of the folder "Saved Variables" to your World of Warcraft > WTF > Account > Your Account Name > Saved Variables > ("Here"). Then load up WoW and right click on the grid icon on your Mini map and open the profiles page and select Custom Grid. That's it! no need to redo your UI, this will only modify Grid.
If this still doesn't work please post here and I will get back to it when I have a chance.