After months of wrangling, Comcast Corp. is gobbling up struggling TechTV from Paul Allen's Vulcan Ventures Inc. and plans to merge it with video-game lifestyle network G4. The acquisition, said to come in just south of $300 million, would propell G4's distribution to from 15 million to 44 million homes. As part of the deal, EchoStar Communications, which had a 10% stake in Tech TV, will have a minority interest in G4. In return, G4 gets a slot on EchoStar's Dish Network's widely distributed "America's Top 120" tier. "The result will be one compelling TV channel that showcases the fun...