Width of the blocks

Hello!
I'm trying to figure out how to change calculation of the percents that article blocks are taking up.
I mean I want to display only images with the title, but as Firebug says these blocks get the whole place that they've been getting if displays every sort of information.
Like this (see link).
http://s006.radikal.ru/i214/1009/bc/9503100943e9.jpg
Thete 4 colums and 2 rows