Peter Kahrel did extensive research on this; see http://www.kahrel.plus.com/indesign/cs4-right_to_left.pdf
A complete overview of all possibilites is on http://www.thomasphinney.com/tag/indesign/
the World Ready Composer to get right-to-left text to import correctly.
Other than that, you might want to set the story direction (for multi-
column frames), and paragraph direction as well as an apropriate font,
Thanks - I'll let you know how I make out...