Products per row not changing? Please HELP!

[icandy87]

I love VM, I am running version 2.0.10 with a rockettheme template. I have gone into virtuemart>config>template>Default number of products in a row> and changed it from 3 to 4, however on the front end of my website icandyupcycles.com it is still only displaying two products per row? How do l fix this? FIXED: I did this by adding this to my rockettheme template

body div.floatleft {
float: left;
margin-left: 0px;
margin-right: 0px;}

Now I only need to know how to change the size of the product category thumbnails?

Thanks