I am looking to purchase a Unix o/s and don't know which one to buy. Is there one that is better than another? Do they all come standard with XWindows? I recently graduated college and must of the interviews that I go on everyone is running C++ and other programming languages from Unix, so where do they run these languages from? Do they purchase a special Unix version or can I install C++ for windows 95 in XWindows? I also notice that a lot of the businesses that I've been at have hp/ux, is that a version that I should be looking at?