“Project Xtreme” should probably be airing on a network called DNDIY (Do not do it yourself). Hosted by “Desperate Landscapes” star Jason Cameron, the series, which airs at 8:30 p.m. Wednesdays on Sunflower Broadband Channel 126 will take you behind the scenes on some of New York’s most compelling (and dangerous) worksites. The first episode has Cameron hanging with painters on the Queensboro Bridge. “Up here, your life literally hangs from a steel thread,” he says. “Deadly falls, severed limbs … toss in a century’s worth of toxic lead paint….” Other episodes will show what it takes to change the light bulbs on the Empire State Building or to install a massive HD flat screen in Times Square.