GLOBAL MARKETS-Dollar, U.S. stocks inch higher before Fed

* European stocks end down as Greek worries continue * U.S. stocks climb; Apple reports strong earnings * Dollar inches up ahead of Fed policy statement (Updates with European stocks' close, adds details) By Caroline Valetkevitch NEW YORK, Jan 28 (Reuters) - The dollar edged up against the euro on Wednesday as investor focus turned toward the Federal Reserve, which delivers a post-meeting statement later in the day, while U.S. stocks climbed after strong earnings from Apple.