how to create blank empty square cell graph template
 

I cannot print the simple instructions that I need to replicate 7500 cells
each with the same height and width of .1 inch (75 columns and 100 rows).
This is to be a template that I can save for multiple uses. There will be no
data entered into the template, but I want to open it up from a saved
location to fill the cells later at different times with different info,
values, data, colors, etc. I want to be able to create the template
efficiently using Excel 2007. I believe Microsoft Works allows nothing
theoretically square less than a quarter inch. The desired template should
fit on 8.5 x 11 paper with .5 inch margins all around.