This 
is very timely for me, as I was next looking into how to do this, so I am 
grateful.
 
But 
it's very puzzling to me that I can't find the actual plugin; I had thought for 
all this time that it was in the distribution I have (0.9.840), but it 
isn't.  I had been hearing about it for over a year and assumed, like 
someone earlier in this thread, that it was just an option that needed to be 
turned on.
 
Furthermore, I haven't been able to download it from the SVN site because 
(apparently) of firewall issues here - I can see the code, and could probably 
download it all via the web interface, but that's incredibly tedious, and we 
also have the 1.0b5 code, so I can get it from there - if indeed it is there - 
or have I made another incorrect assumption?
brain[sic]