Frankly, unless you're using left-aligned text, I doubt anyone reading the printed documents could tell whether a given sentence was followed by one or two spaces. Having two spaces after each sentence in electronic documents that are shared with others will probably just annoy them - it's a throwback to the old fixed-pitch typewriter days and shouts out to the world that the one behind it has Neanderthal relatives. AFAIK no professional publisher uses it ...

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]