What area? If your Northwestish try Beaver County and the FBO's there. Beaver County runs a college program up there so there is alot of flight instructing. Still in Beaver Co. is Prospect Aviation, Greg Taylor owns it and it's a rather large 135 outfit. Try New Castle, PA Marti Hasky owns Hasky Aviation and is a DE in the area he could help you.
Corp work can be difficult in PIT b/c US Air pilots do some moonlighting and know with the 9/11 furloughs it may be imposible.