I am going quietly mad trying to find a way in Word to change automatically the paragraph format throughout a long document, specifically from block paragraphs (no indent, blank line between paragraphs) to indented paragraphs (no blank line, indent three spaces).

Now, in WordPerfect it was easy to design the macro:

Replace <full stop><Return><Return> with <full stop><Return><space><space><space>

Trying to do this in Word did not work. The search string would not accept Enter as a valid search term: the keystroke was interpreted as my ending the definition.

So I used the pilcrow symbol from the Character Map instead of the keystroke. This was accepted into the search string, but when the Replace was run it did not recognise line breaks (Returns = pilcrows) and did nothing.

There must be a simple way to do this, using either Replace or a macro. Advice?

Note that this document will undergo e-book conversion, which will strip away all formatting, so it is not acceptable to play games with the margin/first-line-indent features. The indent must be created as three spaces.