i have a problem with rockettheme template Affinity.

as marked on picture below, id like to change width of current module positions USER1, USER2, USER3 (33.3%, 33.3%, 33.3%) to something like (50%, 25%, 25%)



Here is the complete template.css, any help greatly appriciated.

http://www.mediafire.com/?mqnw4cnzqzj