YP president John Haley sums up his fundraising philosophy thus: "Give them what they want, and like, so that it becomes irresistible." And what do yuppies want? Parties! At least 3000 people in their twenties and thirties have joined, making this the largest young-professionals group to support a charity in Broward and Palm Beach counties. Last year YP hosted 42 events ranging from nightclub mixers to ski trips. Its members contributed $250,000 to Covenant House's $9 million budget last year, an admirable 82 percent of which went directly to the costs of helping the runaway, homeless, and at-risk youth who come to Covenant House for help. Perhaps all that beneficence explains why so many people at YP functions are smiling -- or maybe it's because they have something to confess on Sunday. Covenant House, is, after all, a Catholic charity (though it is not affiliated with any archdiocese and does not discriminate in its programs). And though the Holy Father may not sanction all the goings-on at a YP function, he certainly can't complain about all the good the group is doing.