WASHINGTON (AP) - The White House's top Y2K adviser will report to Vice President Al Gore this weekend as part of a multimillion-dollar effort to monitor computer problems in this country and abroad. John Koskinen, head of the President's Council on Year 2000 Conversion, said Monday it was decided Gore will be the White House contact on Y2K developments because "he has been historically monitoring this issue." Koskinen also will be briefing President Clinton through the week, officials said. The council's Information Coordination Center begins 24-hour operations Thursday, collecting data on possible Y2K computer problems from about 180 countries and all 50 states. It will stay in operation through March, after the Feb. 29 leap year date, which could pose related computer problems.