Miguel: >> PS: I am a new user in Mac. I know unix and windows, but i am a bit losed with Mac Os If you're on a Mac, simply install XCode from the OS X installation DVD, or download XCode from the webpage. It installs the GUI IDE, but you can invoke gcc from the command line, as you're familiar from MinGW/unix. If you run in to trouble, visit Apple's homepage or google and you should find all the starter answers you need. Blake