The new version 1.0 from OpenOffice.org Thumbnail plugin has been released. OpenOffice.org Thumbnail plugin is a plugin for KDE file managers (Dolphin and Konqueror) to preview OpenOffice.org files (OpenDocument Format) as Thumbnails. You do not need to install OpenOffice.org for it to work (it only uses KDE API).
I think a lot of people are looking for this thumbnailer. This thumbnailer will help you to get a quick glance at your OpenOffice.org’s OpenDocument files.
You can get this thumbnailer by clicking on this link for openSSE 11.2. The other distributions from here.
After you install this thumbnailer, you need to activate it from dolphin: Settings->Configure Dolphin…-> General -> Previews