Create Office Space in Your Living RoomIt's the setting for grown-up evenings, rowdy kids' gatherings, and all the family comings and goings in between. When you're integrating an office into this multifunctional room, the first rule is not to let the work space stick out aesthetically or physically. Keep to the room's color and decoration schemes, and make sure the furniture doesn't impede traffic flow. Make use of what's already there (shelving, cupboards), and introduce elements (lamps, chairs) that can serve other purposes when the work is done.FurniturePositioning a desk flush against built-in bookshelves leaves space for people to pass. This one, purchased unfinished, was painted white to blend in with the room's wood trim. The high-back leather armchair provides comfort and support during hours spent logged on to the computer, yet it's attractive enough to be pressed into service at cocktail hour. Under the desk, a child's footstool (also painted white) keeps the computer tower off the floor andwithin easy reach. To Buy: Gothic Cabinet Craft Farm Style Legs table in unfinished birch, $179, and footstool in unfinished pine, $27: www.gothiccabinetcraft.com. Pottery Barn Grayson Armchair in chocolate leather, $564, www.potterybarn.com.