Hi Jose. When you say it does not work, do you mean VBox or Legacy? Neither do I know which version of Mac you are using or how far up the Mac learning curve you are. Assuming it is Leopard and at risk of teaching you to suck eggs, and assuming you have installed VBox then you should have a VBox icon in your Dock (single click to open), otherwise locate it in your Finder/Applications folder (double click to open). Open V Box and put your Windows disc into the CD drive and install Windows XP into V Box. It does not matter what version of Windows XP you use or its security updates provided you are not going to access the internet via V Box. Once you have Windows installed correctly, the next time you open V Box, click on the 'Start' button in the top tool bar and a normal Windows desktop should open. From then on your Mac will behave just like a Windows machine into which you can load applications, open files on the Mac etc etc. Follow these steps and if you get stuck, e-mail telling me exactly how far you got and exactly what the screen is showing and I will try to help - but beware, I am only a recent convert to mac myself so still learning. Regards, Barry