Hi guys, I'd like to share a little piece of software I've made. It's actually an add-in for Word 2007/2010 (I've tested it on x86 only, not sure whether it'll run on x64 as well) in which you enter your Kindle address and then by clicking a button format currently opened document for the Kindle 3's screen. You can send it directly to your Kindle with another button.
This add-in might not be useful for everybody, it's main purpose is to serve people with similar needs to mine - if you have a document with pictures, Word equations and tables, the PDF format is AFAIK the only option for preserving the exact layout as in the original document.
More info and a download link is on my blog right here
EDIT: The problems mentions in the posts below have all been fixed, so if you didn't want to try this addin because of them before, now you can!