Are you asking whether you can take books you purchased for your Kindle and put them on Stanza on your iPod? Unfortunately, the answer is "no", at least at this time. Kindle files are locked to that device using digital rights management (DRM) techniques, and they are not permitted to be read on other devices.

We are researching a number of solutions to the DRM issue, and we hope to have an announcement to make about it in the near future.