It's serious <a href=" http://www.madeiraplastica.ws/prosta-plus-peru/#filch ">prosta plus inpra</a> NEW YORK, July 29 (Reuters) - U.S. stocks slipped and thedollar came off a five-week low on Monday, a day ahead of thestart of the Federal Reserve's two-day policy meeting, which isbeing keenly awaited for signs on when the U.S. central bankwill begin to scroll back on its bond-buying program.