Charting/Graphing a design layout

Heya y'all.
I'm attempting to produce a chart/graph which will provide a layout for an installation grid of ceiling tile, based on the width/length. I'm thoroughly familiar with the calculation process involved in producing the required number of peices, and I believe i'm capable of creating a VBA code which will output the numbers representative of the placement for each component. I do not however, know of a system within Excel in order to represent these outputs visually.

I've attached a very poorly drawn example of the output I'd like to achieve, along with a fairly thorough explanation of the component estimating process.

As I mentioned, I'm not looking to have someone write the whole shebang for me, I just need a nudge in the right direction in terms of where to get started with visually representing the numbers once I calculate them.

Any help would be appreciated.

p.s.
Don't laugh at my sketch, it's awesome and you know it.



mew!