Change front page layout

I want use the right sidebar in front page but publish it causes resizing of featured products images. I tried to set up the number of products per row on two and one but the problem remain. How can i change layout to have two products per row occupying the rest of the space between left and right side bars?

Send us link to page where you have conflict

At the brazilian portuguese option you can choose it on top right corner
This is one

lojadasoja.cloudaccess.net/br/

another one

lojadasoja.cloudaccess.net/br/home/88/28...-de-soja-detail.html

you have set 3 products per row so it works OK, width of product is 33% so row is reserved for 3 products

I know that. What I want is to use the front page with right sidebar. As this bar occupies part of the space available, I thought of deleting a row position and distribute the space for 2 products.
Have I made ​​myself clear?

You can maybe use menu item page suffix , (suffix that starts with blank char) like :
" my_layout"

then in css:

.my_layout .width33{
width:49%!important;
}

something like that I guess