Ive never actually burned through the finder, because I own Toast, but I believe it goes like this: First, be sure you have enough disk space free as what you are trying to burn, because the finder will make a whole new image, and thus duplicate the files that you are trying to burn. Insert your blank cd-r, which should mount on your desktop, and click the like prepare to burn button. Drag all the stuff you want to burn onto that image. Then in the apple menu there should be a pull down "burn" option. I could be wrong, but I think that's how it goes.