I'm hoping to widen the right widget area on my Vantage site to 300px (I think it's currently 215px or so). Do I need to edit the CSS to do this? If yes, what is the CSS setting I should edit?
My purpose is I'd like to use Google's "medium rectangle" (300x250) ad area instead of the "Wide skyscraper" (160x600). I am using the Google Publisher plugin (works great so far).