If I could I would get rid of everything related to Microsoft but unfortunately I need to use Windows applications for my work. Specifically, Autocad Civil 3D, Revit Architecture and a bunch of structural engineering programs. I have tried running these applications on Parallels on Mac systems such as MacBook Pro Mid 2009 (2.93 C2D, 4gb ram) but was not satisfied with the performance. Autocad was lagging even when working in 2D. I don't even have to talk about Revit... I never had the opportunity to test this on more powerful systems and this is where I need your advice. Is it possible for the Mac Pro to run these applications on Parallels seamlessly? That is, as if you were running Windows on a PC? What is more important CPU, RAM, GPU? To catch up with a few possible comments, a) I don't want to run Windows via bootcamp, b) I am aware that Autacad is coming to Mac OS but I need the extra features of Civil 3D and Revit. Any advice would be greatly appreciated... Thanks!