What guycrunch said...but honestly, I would want to crop the dead space off the pics prior to posting them up in Photobucket so that 1) you don't have a pic that is 90% dead space, and 2) the pics are not so big when you start to load them over the web. I use Photoshop, but there are a lot of other photo editing softwares available that are easier to use than Photoshop.
Joe