Quick conversion, Word or HTML to Mobi?

I know this is somewhat sacrilegious, but I have a simple task needing done. Conversion of an existing Word document to .mobi format.

The manuscript I have was written in Word; my next one will be written using Scrivener, but at the moment I have yet to embrace Scrivener, and hope someone can point me to a simple set of instructions by which I can take an existing 70,000 word MS Word file, import it quickly to Scrivener (without having to break it down to its nearly 60 constituent chapters/front matter/rear matter) - and save it as a .mobi file.

I need this to be able to email .mobi files to reviewers.

If this has been asked a million times before, please accept my apologies right now.

Yours,

Ron McMillan
www.ronmcmillan.com