I may have found the answer from Roger Wilmut (sp?) posted several years ago that images should be 600x600, does this jive with anyone else's experience...makes me wonder if I should import screen shots into iPhoto adjust their size, and export them...lots of work. What I am trying to do is create a podcast tutorial of how to use websites for a certain group, but it's imperative that they can see the screens! I've tried screencasting with Quick Time, but it is so time intensive because one little mistake in the middle of a screen cast makes me have to start all over again.
Thank you to anyone who has ideas to solve this issue!