I am using the classic theme. I want to add graphical buttons to the menu bar rather than having the text ones. I'm not sure how to do this. I read that you have to copy/paste/edit /themes/sample/theme.php to work with the links, but I don't understand how to get a imgage to be the button. Any help would be awesome. Thanks.
Check out the other themes that use buttons you would like. Then copy the code. Don't edit the classic theme. Instead, make a copy and rename it, and update the css path in template.html. It would make upgrades less inconvenient.
check theme.php of those standard themes that comes with custom (graphical) button such as moc_ox_x or rainy_day or eyeball , hope you've got the idea ...