Single post in Site Skins: How-To, and Helpful CSS

Alright I have a couple of questions, One is really old and was never truly answered and another is one i cant remember if i asked or not. I will start with the more simple of the two I know there is a code that allows you to put multiple Progress bars side by side (where they are not under one another), But is there a way to do this with hide boxes? If so how would I go about that. And is there a way to change and replace the trainer sprite image with something else in your site skin? cause as far as I am aware this was never answered.