See http://word.mvps.org/faqs/formatting/CleanWebText.htm.

Signature
Stefan Blom
Microsoft Word MVP
> How can I quickly remove carriage returns in a previously formatted document
> or text when copied from an email where the carriage returns were forced or
> entered by another person? Clear Formatting only removes the font and the
> margins if someone previously had smaller margins and it word-wrapped.
>
> Thanks