You create a new album (or use an existing one) and fill them with a nice worth seeing set of photos. When needed you drag some picture around to create a nice sequence. You review the result by starting a full screen slideshow on Picasa. When everything is as you have wished, you connect your digital photo frame to the USB port of your PC and press on the "Export" icon. When asked you select the pixel width and some other settings and confirm by clicking "Ok". Depending on the number of pictures you have to wait for a while and then the moment of viewing is there.