Searching MR older threads I found that AbiWord has a command line tool for converting doc/docx to html. One can download and install this software for free.
I made a simple batch file to quickly send a single word document to my Kindle. I used a second parameter for title because many Word docs don't have the title set.
Code:
set kindleip=192.168.0.xx
set kindlepw=xxx
echo converting %1 to %~n1.mobi with title %2 and copying it to Kindle with %kindleip%
"C:\Program Files (x86)\AbiWord\bin\AbiWord.exe" --to=html %1
"C:\Program Files (x86)\Calibre2\ebook-convert.exe" "%~n1.html" .mobi --title %2
c:\Windows\pscp -pw %kindlepw% "%~n1.mobi" root@%kindleip%:/mnt/us/documents/remote/
c:\Windows\plink -pw %kindlepw% root@%kindleip% "dbus-send --system /default com.lab126.powerd.resuming int32:1"