MELVILLE - Egyptian-Americans living on Long Island have joined in the jubilation over President Hosni Mubarak's resignation, which was announced earlier today. "I'm so happy for everybody back in Egypt," says Ibrahim Osman, who runs the Nile Café and Grill in East Meadow. Osman, who left Egypt 22 years ago, says this is the day his relatives both in Cairo and in the U.S. have been waiting for. At the Islamic Center of Melville, dozens of Egyptian-Americans arrived for Friday prayers telling Imam Dr. Osama Ounis they were ecstatic at the historic change that happened in their home country. "I think people over there taught us a very good lesson in determination and that things could be changed not necessarily by force, but peacefully with determination," Ounis says. Still, while Egyptian-Americans are celebrating, many say they are concerned about the future of their home country.