How to read Misrosoft Word .DOC and .DOCX documents on Kindle

[any ANONYMOUS forum user]

Convert your ePub, .DOCX, .DOC,... files and transfer them to your Kindle using freeware Calibre
Calibre is a freeware program (Windows/Linux/Mac) which allows you to convert ebooks to Kindle format and transfer ebooks to Kindle.

How to convert .DOC and .DOCX documents to Kindle format

1. Calibre doesn't allow to convert .DOCX, .DOC documents directly. But you can convert them into .ODT format using freeware LibreOffice Writer or OpenOffice Writer.
2. Then add .ODT files to Calibre (by drag-n-dropping, for example).
3. Select Calibre ebooks that you want to convert and hit the "Convert books" button. Use MOBI as an output format.
4. Connect your Kindle to your computer using a USB cable. Transfer ebooks to your Kindle

How to send ebooks to your Kindle via Whispernet using e-mail (fee based service)

Each Kindle has a unique and customizable e-mail address. You can set your unique email address on your Manage Your Kindle page. You and your approved contacts can send send MS Word .DOC, .DOCX, PDF documents, and pictures to your Kindle via Whispernet for a fee. Kindle supports wireless delivery of unprotected Microsoft Word (DOC, DOCX), PDF, HTML, TXT, RTF, JPEG, GIF, PNG, BMP, PRC and MOBI files.

Note that PDF and DOCX conversion is experimental. Some complex PDF and DOCX files might not format correctly on your Kindle.

Note that this serice is NOT free.

[SauliusP]

From now on there is an optional plugin DOCX Input for Calibre downloadable via "Get more plugins". It allows one to convert DOCX file into any output format Calibre supports.
DOCX Input forum thread