The final days of the Watertown project start with Richard Trethewey's tour of the completed kitchen, complete with stainless-steel cleanup sink, the completed baths, and the laundry. We get a lesson in wallpapering from expert John Gravallese. Hint #1: use a ton of single-edge razor blades. Decorative painter Julia Purinton and her crew show us their two-tone striped wall treatment in the guest bedroom. Craftsmen install a restored stained-glass panel in the front door and a brand-new one in the front wall. Lighting designer Doreen Le May Madden shows us the finished lighting package in the kitchen - including a dimmable fluorescent ceiling fixture - and the dining room, and Christian prepares some hors d'oeuvres in his new kitchen. We check out Susan's new office, where she's using a high-speed cable modem to surf the internet, including the new This Old House and New Yankee Workshop sites, and moves on to find Steve Hayes setting up the media room with some new, adjustable and tunab