I'm planning on buying a 40" Sony Bravia. Home installation is like $400 (which does not include delivery). I'm wondering how hard this job is and whether I should attempt to do this myself. I want it wall mounted with no wires showing, and calibrated. I don't imagine wall mounting being that difficult, I have the model number for the mount. I have a level and a drill. Does anyone know how they hide the wires? Regarding calibration, I think I can find some settings online. Does anyone know how reliable these sources are? Does a professional need to eyeball it for my specific application? Help!