http://blogs.msdn.com/b/hpctrekker/archive/2009/09/28/installing-sua-a-walk-through.aspxI have explained what SUA is and how it differs from Cygwin in previous blogs. Basically, SUA stands for Sub system for Unix Applications, and it is an alternative to Cygwin if you have windows server or Windows Client (7, vista) Ultimate installed. Rememberen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)