Changing the way subcategories are shown

I need some help with editing how the subcategories are seen. Right now the subcategories are show in two rows as text. What I would like to do is be able increase that to 3 rows. I would also like to have the subcategory image above the text. I have attached an example of a before and after of what I want (please ignore the color of the text in the “What I want” part).

Can you please let me know how I can do this? Or what fields I need to change in order to make these change? Thanks.

[color=#555555][font=Arial, Helvetica, sans-serif][size=3][/size][/font][/color]

Guide here: Subcategory images

Thanks a ton for that, I got the number of columns that I want, but I cannot get the images to show for the subcategories. I am getting a “No image available” message even though I have images and thumbnails for all the subcategories. Any thoughts on how to get the images to show up? Thanks.

Nevermind, I didn't have the in the right section. Thanks again, you guys are great.