To read Kindle books (which is in AZW format) on your PC, here is a free application from Amazon that can be installed on your Windows7, Vista and XP system.
Features of Kindle For PC:
- Get the best reading experience available on your PC. No Kindle required
- Access your Kindle books even if you don't have your Kindle with you
- Automatically synchronizes your last page read and annotations between devices with Whispersync
- Create bookmarks and view the annotations you created on your Kindle