Easy Character Accents in Mac OS X?

joesao writes "How have people been typing accents under OS X? I'm not talking funky key combinations, but simple, 'dead-key' stuff like: a + ` = à. In Windows this is accomplished easily by setting the input locale for keyboards as 'United States-International' but the similar function under System Preferences doesn't have any acceptable keyboards. Unicode isn't an option, either; only a few applications support that. Documentation on Apple's site is scant, and a Google search doesn't yield anything that really works. Anybody out there have a decent keyboard file for Mac OS X?"