XML and Flash Photo Gallery

How do I add effects, like a fade or a pixel dissolve, in the XML file that goes along with the Flash photo gallery? Does it go within the <image> tags? Do I need to change anything in the flash code?

Also, everytime I change the delay number (it’s currently at 3000), the time an image appears never changes. I’ve even changed the number to 9000, but it doesn’t recognize the new number. Is there somewhere in the flash code that I need to change to alter the time that an image appears before it changes to the next image?