Hi, i have installed Xampp on a Windows Vista machine and its works ok. My problem is that when i start Apache i got an error message (make_sock: could not bind to address 0.0.0.0:80, no listening sockets available. Apache could not be started. Please help

If you are developing locally,i will suggest you better use microsoft web matrix.It has a great interface and great features for web development.
And as for apache,i am myself not expert at that.