Well I just installed coppermine and don't like the default theme, I'd like to change the logo and the general look, how can I change the the theme/template and change the logo. Also how can I add my ads to coppermine?
Please, only one question per thread next time as per the board rules. ;)
Take a look through the demo section for themes.
http://coppermine-gallery.net/Obsolete
There are plenty to choose from. If you cannot find one to your liking then read through the FAQ's on the theme section. The board has a search facility which will provide all the answers to your above questions.