Set PTE to 4:3 Aspect Ratio - No need to change aspect ratio of the images but set the "Project Options" aspect ratio to 4:3. One 60 second and the other a 35 second effect.
http://www.lin-evans.org/styles/linsmagnifyingglassstyles.zip (link to styles)
http://www.lin-evans.org/styles/magnifylargerstyles.zip (link to 2 more styles with larger magnifying glass)