The Input Sources pane of the Languages & Text system preference (called International in previous versions of Mac OS X) provides additional controls for working in multiple languages that include both right- and left-reading orders. Note also that the Character Palette has been renamed the Character Viewer, and there's now just one control to make these available via the menu bar. Also, the Japanese Kana Palette control is gone; it now automatically appears when you choose that input method.
Snow Leopard vs. Windows 7: Battle Begins August 28
5 Things You Should Know about Snow Leopard
OS X Snow Leopard vs. Windows 7
See the InfoWorld slideshows:
"What's new in Mac OS X Snow Leopard: For all users" and "What's new in Mac OS X Snow Leopard: For office users."
Get all the details on the new Mac OS X in the "Snow Leopard Bible," by InfoWorld's Galen Gruman and Macworld U.K.'s Mark Hattersley.
Follow InfoWorld's ongoing coverage of Mac OS X Snow Leopard.