You're looking in the right directory, but at the wrong files. The PNGs you find there are used for the thumbnails in the scene selection dialog. You should open the .dt2 files with an image viewer
Offtopic:
quote:
Originally posted by 0rpheus
I'm using 64-bit Windows 7.
quote:
Originally posted by 0rpheus
C:\Documents and Settings\My User Name\Local Settings\Application Data\[...]
Since Vista, Documents and Settings was renamed to Users, and Local Settings was moved to AppData\Local. How come you still have those folders?