Debbie,
Glad you posted this. I've used this a few times in my slideshows and really like the effect. I've also uploaded a couple of examples in the following slideshow. I just pulled them from a couple of my existing shows and put them together here.
http://www.photodex.com/sharing/viewsho ... 6608&alb=0
Ben
EDIT: Opps! I was kindly reminded that this is the Tutorial Topic,
but my examples are made exactly like Debbie describes and playing around with the different settings. Sorry!