[Plugin: WP Bannerize] CSS

I’m trying to switch from WP125. I like how I could set my 125×125 to display in two columns with:

/* Styles for two-column display */
#wp125adwrap_2c { width:100%; margin-left:-10px;}
#wp125adwrap_2c .wp125ad { width:125px; float:left; padding:10px; }

How can I achieve this with this plugin?

http://ww.wp.xz.cn/extend/plugins/wp-bannerize/