Someone posted some new articles on the W3C blog about writing for right-to-left languages.

http://www.w3.org/blog/International...-left-scripts/

The first one is a quickie get-off-the-ground article, while the other three go more in-depth. If you're writing a page with Hebrew, Farsi, Arabic or mixed ltr and rtl pages, these little tuts give some clear guidelines for authors (us).