If he ever makes it to Broadway, he could be the first member of the royal family ever to get a Tony. As in award. Buckingham Palace announced yesterday that Prince Edward, youngest son of Queen Elizabeth and Prince Philip, is joining Andrew Lloyd Webber's Really Useful Theatre Company in February as a production assistant. The 23-year-old prince has been known to break a few royal traditions: A year ago he quit the Royal Marines. Though he receives an annual government allowance of $35,400, his undisclosed theatrical salary will be in line with those of the other five production assistants in the company, according to the prince's future boss, company Executive Director Bridget Hayward. Will he have preferential status? "It is the lowest rung ... The prince will be treated ... as an employee ... He has a lot to learn and we have plenty of work for him," said Hayward. The prince will work "an ordinary eight-hour day," and so far as his new career move goes, he has his parents' "full support." Webber was responsible for international musical smashes "Evita," "Jesus Christ Superstar," "Cats" and "Phantom of the Opera." The composer said he was "delighted" Edward would be joining the company.

Ron Reagan as Sitcom Star

He's been in an American Express commercial. He's appeared as a dancer with the Joffrey Ballet. He's played feature reporter on "Good Morning America." He's pranced in his skivvies on "Saturday Night Live." And now, Ron Reagan is starring in a new cable TV comedy special. "Cinemax Comedy Experiment: Ron Reagan Is the President's Son" will air later this month. It was written by Penn Jillette (of the comedy duo Penn and Teller) and Eddie Gorodetsky, a former "Saturday Night Live" writer, and will spoof the trials and tribulations of being a chief executive's son. Will his famous folks be watching? Well, he says he's not sure whether the White House gets cable, but just in case, "I'll send them the tape."

Out and About

For the past two years Bruce Springsteen has quietly been doing volunteer work in a Newark branch of New Jersey's Community Food Bank. Its executive director, Kathleen DiChiara, says Springsteen (who lives in nearby Rumson) has "loaded crates of food, driven tractor trailers and directed traffic" on the loading docks. He also recently sent the food bank a check for $50,000. Springsteen has had a long history of donating money and playing benefits ...

And speaking of famous singers, it looks as if David Bowie could be going back for a second AIDS test. Bowie is being sued by Wanda Nichols, a Dallas woman who spent the night with the singer after an October concert. Nichols is pursuing a civil suit claiming Bowie sexually assaulted her. He fulfilled an earlier request for an AIDS test in Switzerland and the results were negative. Nevertheless, Nichols' lawyer, Robert M. Rose, wants more tests ...

Martha Graham, the 93-year-old grande dame and choreographer of modern dance, was hospitalized Sunday in New York for tests following dizziness. Ron Protas, associate director of the Martha Graham Dance Company, declined to say which hospital admitted Graham, but said she was in "stable condition." Graham, whose maverick dance works draw on such eclectic sources as Greek mythology and the American frontier, returned to New York last month after a tour with her company in Scandinavia ...

Tonight from 6 to 8 at the Willard Hotel, Super Bowl-bound Washington Redskins Coach Joe Gibbs will host a fundraiser for the Miami Project to Cure Paralysis, a charity committed to research into spinal cord trauma. Its spokesperson is Marc Buoniconti, the 20-year-old quadriplegic son of former Miami Dolphins linebacker Nick Buoniconti. The younger Buoniconti was injured in a college football accident in 1985. Cochairmen of tonight's event are former president Gerald Ford and former House speaker Tip O'Neill. The athletic celebrity guest list includes tennis star Pam Shriver and former Redskins Joe Theismann, Sonny Jurgensen and George Starke. Tickets are available through Michael Kerrigan at 452-0083 ...