item row display- spacing issue

[product247]

When I click on a category the product rows are stacked right on top of eachother and I'm having trouble finding where I can change this. when I look at the source I see that the div is "productListing-odd" and "productListing-even" but this is not in the style sheet didnt know if there was a *.php template file to modify. Any help would be much appreciated, thanks!

[kobra]

Information??

what version of Zen Cart are you using?

what is the link to your site