Some great advice here, I always found 2 pages to be a happy medium and never ever put the initials CV or Curic.... (whatever it is) on the top, just your name, at the top of every page. Two part documents might be a reasonable way of doing things as well, a short pithy 1 pager acting as a summary with a longer more detailed version acting as supplementary.
Photos are a a good idea but can be a double edged sword, depends what you look like, first appearances count, despite what anyone says otherwise.
Have both word and PDF versions (there are loads of online PDF converters online, no need to download any software, just do a google search)
Steer clear of colour because they get copied and colour docs when copied can look rubbish.
I have a neat and modern looking word CV template if anyone wants to PM me their email.