HOLLYWOOD, June 26, 2000 -- Do you feel a disturbance in The Force today? No doubt you've sensed it, because principal photography for "Star Wars: Episode II" officially starts today in the land Down Under. You'd have to be a total curmudgeon not to be excited about it; either that, or you'd have to be Australian. See, Web sites, newspapers and magazines around the world have been abuzz for months about the new "Star Wars" flick. There were headlines when little-known Hayden Christiansen was picked over bigger names to play the young Darth Vader; heck, there were even headlines when George Lucas arrived in Australia last week to get ready for the shoot. But when we asked Garth Franklin, producer of the renown Dark Horizons movie site www.darkhorizons.com and a resident of Oz, about how Aussies' themselves are gearing up for the shoot, he reported that the locals aren't a