Grid Size

How do i make the grid so the boxes in the grid are smaller like this in the picture so i can make my box smaller
http://img259.imageshack.us/img259/1226/66474714.jpg

[editline]19th December 2011[/editline]

Figured it out…

:eng101:

For future references check these websites out,

http://www.facepunch.com/showthread.php?t=519418