The motherboard most likely won't support the 960T processor. Why not sell the old system and get a new motherboard that's 100% compatible with it? You're replacing almost everything else, so why not build a completely new system?
Your version of Windows 7 might be tied to the Packard-Bell system, but it may also work with a new motherboard if you don't have to reinstall. Microsoft can tell you if it will work or not. Unless you know exactly what motherboard you have, there's no way to verify that it supports the 960T processor. I presume that you already determined that the Packard Bell motherboard can be installed in a standard ATX case?
dont think it will support 960t since it only said amd2 when i opened the case earlier, but i still believe it will fit in a standard atx case, dont Remember why.. i think i saw some threads about similar mobo.. but now im not even sure it fits x)..