If you wish to do the exercises during the course you need a laptop with wirelss lan which should fulfill one of the following requirements: - either have linux installed - or if you have XP/Windows 7 you either need putty (http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html) or better if you want to do the exercise with the graphical user interface of AFD install cygwin (see intallation instructions). During the course the users with XP/Windows 7 will get access to a virtual machine which will have a linux distribution of their choice installed (either Fedora 17, Scientific Linux 6 (RedHat), Ubuntu 12.04 or opensuse 12.1).